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Finding the Third Proportional to 11,934 and 15,691.50

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Solution

The third proportional to 11,934 and 15,691.50 is: 20,632.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,934 : 15,691.50 = 15,691.50 : x
  2. Step 2: Convert to fraction form
    11,934/15,691.50 = 15,691.50/x
  3. Step 3: Cross multiply
    11,934x = 15,691.50 × 15,691.50
  4. Step 4: Simplify right side
    11,934x = 246,223,172.25
  5. Step 5: Solve for x
    x = 246,223,172.25/11,934
  6. Step 6: Final answer
    x = 20,632.07

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.