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Finding the Third Proportional to 87,291 and 133,472.25

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Solution

The third proportional to 87,291 and 133,472.25 is: 204,085.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,291 : 133,472.25 = 133,472.25 : x
  2. Step 2: Convert to fraction form
    87,291/133,472.25 = 133,472.25/x
  3. Step 3: Cross multiply
    87,291x = 133,472.25 × 133,472.25
  4. Step 4: Simplify right side
    87,291x = 17,814,841,520.06
  5. Step 5: Solve for x
    x = 17,814,841,520.06/87,291
  6. Step 6: Final answer
    x = 204,085.66

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.