180 in the ratio 1:3:4

let 1:3:4 be written as x:3x:4x

therefore, x+3x+4x = 180

                 8x = 180

                   x = 180/8

                   x = 22.5

therefore, x = 22.5

               3x = 22.5 * 3 = 67.5

               4x = 22.5 * 4 = 90

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