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Unit 19 Proportions
Find out if the following ratios are in proportion (equal) using cross multiplication.  
1) 2:4 and 6:12

2) and

3) 2:5 and 11:20 
Use cross multiplication to determine which fraction is larger.  
4) and

5) and  6) and 
Complete statements 7, 8, and 9 using either >, <, or =.  
7) _____ 
8) _____ 
9) _____ 
10) 4 of 5 girls and 8 of 10 boys
passed a recent English test. Are these ratios in proportion? 
11) A survey found that 5 of 9 students go to
the library at least once a week. For honor
students, the ratio was 18 to 25. Does
one group have a higher ratio than the other?

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