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Determine whether each is a proportion or not. Write YES or NO. 1. 1/3 and 2/8 2. 4/5 and 8/9 3. 3/7 and 4/9 4. 12/15 and 4/5 5. 2/6 and 4/10 6. 8/10 and 4/9 7. 6/7 and 24/28 8. 2/5 and 4/12 9. 15/20 and 5/6 10. 28/24 and 2/3​