Hi! I think I know a perfect solution for you, I’m using it on my Open Source project - the one and only “Auto-Substitution” 
This feauture automatically uses the closest TM match and adjusts it to the similar source string. In other words it can make the 93% match easily a 100% match. I assume in your case it will take the translation from the string A and replace the numeric value in the translation to match the string B (I hope I’m not mistaken)
You can try it on your own, perhaps it will suit your needs just perfectly
P.S. Just in case - The option could be found in the General settings 