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Finding the Third Proportional to 10,061.50 and 15,915

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Solution

The third proportional to 10,061.50 and 15,915 is: 25,173.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,061.50 : 15,915 = 15,915 : x
  2. Step 2: Convert to fraction form
    10,061.50/15,915 = 15,915/x
  3. Step 3: Cross multiply
    10,061.50x = 15,915 × 15,915
  4. Step 4: Simplify right side
    10,061.50x = 253,287,225
  5. Step 5: Solve for x
    x = 253,287,225/10,061.50
  6. Step 6: Final answer
    x = 25,173.90

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.