1. Which ratios form a proportion? (1 point)
4/9=12/25
3/7=18/42
5/11=20/45
5/8=15/25

which ratio forms a proportion with 18/30
20/35
50/90
36/48
60/100

which proportion has cross products of 5x24 and 8x15
5/8=15/24
5/24=8/15
8/24=15/5
15/8=5/24

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