I don't think they do. If memory serves, the very last episode, when Ranma (in his male form) actually has to rescue his mother, she sees him for the first time since he was, probably, no more than 4 or 5.
It ends where Ranma meets Akane in the middle of the street and she's staring out into space. He asks her, "Something wrong?"
"No, nothing's wrong."
And they both say goodbye and run to school. That's it.
in the manga they diddn't get married 'cuz people(who weren't freaking invited!)came and crashed the party.plus,akane only agreed to marry ranma because the springs guide sent them nannuchiuan water(a.k.a "man water")so,they could become full men again.but happosai drunk it all up thinking it was sake.so,later soun's talking to the two of them and says something like,'Maybe you two should just wait til you get all your affairs in order.'and ranma and akane were both like,"You do realize that this is your fault."and @ the end they showed the writers credits and akane said to ranma,"I'll race you to school!" The End(i REALLY think he should marry shampoo!)
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It ends where Ranma meets Akane in the middle of the street and she's staring out into space. He asks her, "Something wrong?"
"No, nothing's wrong."
And they both say goodbye and run to school. That's it.