Which group of four numbers can make up the proportion? Write out the proportion (1) 1.2, 8, 9 and 60 (2) three fifths, 0.5, 10 and 0.3 (3) 1 / 3, 1 / 6, 1 / 2 and 1 / 9 (4) 4, 12, 5 and 15

Which group of four numbers can make up the proportion? Write out the proportion (1) 1.2, 8, 9 and 60 (2) three fifths, 0.5, 10 and 0.3 (3) 1 / 3, 1 / 6, 1 / 2 and 1 / 9 (4) 4, 12, 5 and 15

(1)(3)(4)
8:1.2=60:9=20:3
1/3:1/9=1/2:1/6=3:1
4:5=12:15=4:5

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