Solve for the unknown interest rate in each of the fol intermediate calculations and enter your answers as a perce places, e$.$g$.,32\mathrm{.}16.)$

$\backslash$table$[[$Present Value,Years,Interest Rate,Future Value$],[$$$,180,5,\%,$$$,228],[,300,19,\%,,859],[,33,000,20,\%,,152,407],[,32,261,30,\%,,644,965]]$