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Finding the Third Proportional to 40,212 and 52,542

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Solution

The third proportional to 40,212 and 52,542 is: 68,652.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,212 : 52,542 = 52,542 : x
  2. Step 2: Convert to fraction form
    40,212/52,542 = 52,542/x
  3. Step 3: Cross multiply
    40,212x = 52,542 × 52,542
  4. Step 4: Simplify right side
    40,212x = 2,760,661,764
  5. Step 5: Solve for x
    x = 2,760,661,764/40,212
  6. Step 6: Final answer
    x = 68,652.68

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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.