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Finding the Third Proportional to 52,442 and 68,972

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Solution

The third proportional to 52,442 and 68,972 is: 90,712.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,442 : 68,972 = 68,972 : x
  2. Step 2: Convert to fraction form
    52,442/68,972 = 68,972/x
  3. Step 3: Cross multiply
    52,442x = 68,972 × 68,972
  4. Step 4: Simplify right side
    52,442x = 4,757,136,784
  5. Step 5: Solve for x
    x = 4,757,136,784/52,442
  6. Step 6: Final answer
    x = 90,712.34

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.