Gold is at $2145 today. If we look at the traditional gold to silver ratio, say 12 to 1, the price of silver should be about $178 today, yet it is at $24.17. When will the manipulations end?

Even the 12 to 1 was likely suppressed.
I understand that silver is used in many applications and this should have put usage pressure on its price.

IDK, if manipulation completely ends before the FED ends. I've been assuming that the manipulation ends as the FED is weakened and removed. I suspect some incremental removal of manipulation along the way,

Yeah the ratios I found range from 8 to 1 to 15 to 1. I think you are right, as the central banks are phased out around the world, fingers crossed, I think a lot of the manipulations will begin to fail. Still have to do something about the hedge funds and investment banks that also manipulate everything.