Equivalent: 1:2 and 2:4, 1:3 and 3:9, 1:4 and 10:40, 2:3 and 200:300, 4:5 and 16:20, 1:11 and 7:77, 1:2:3 and 2:4:6, Not equivalent: 2:3 and 4:5, 1:2 and 4:6, 3:10 and 30:300, 6:8 and 1:3, 3:5 and 18:20, 1:10 and 2:30, 2:4:5 and 6:12:50,

equivalent ratios

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