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Finding the Third Proportional to 7,272.50 and 15,689

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Solution

The third proportional to 7,272.50 and 15,689 is: 33,845.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,272.50 : 15,689 = 15,689 : x
  2. Step 2: Convert to fraction form
    7,272.50/15,689 = 15,689/x
  3. Step 3: Cross multiply
    7,272.50x = 15,689 × 15,689
  4. Step 4: Simplify right side
    7,272.50x = 246,144,721
  5. Step 5: Solve for x
    x = 246,144,721/7,272.50
  6. Step 6: Final answer
    x = 33,845.96

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.