An earthquake model gives log5(x)=4\\log_{5}(x) = 4log5(x)=4, where xxx is the intensity ratio. Solve for xxx.
x=9x = 9x=9
x=(5)4x = (5)^{4}x=(5)4
x=5cdot4x = 5 \\cdot 4x=5cdot4
x=45x = 4^{5}x=45