Project A requires an initial investment of $$51$ and will pay $$22$ at the end of the next three years. Project B requires an initial investment of $$76$ and will pay $$31$ at the end of the next three years. What is the crossover rate for these two projects? Express your crossover rate in decimal format and accurate to $4$ decimal places $($e$.$g$.,0\mathrm{.}023450$ should be entered as $0\mathrm{.}0235).$