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Finding the Third Proportional to 74,784 and 101,424

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Solution

The third proportional to 74,784 and 101,424 is: 137,553.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,784 : 101,424 = 101,424 : x
  2. Step 2: Convert to fraction form
    74,784/101,424 = 101,424/x
  3. Step 3: Cross multiply
    74,784x = 101,424 × 101,424
  4. Step 4: Simplify right side
    74,784x = 10,286,827,776
  5. Step 5: Solve for x
    x = 10,286,827,776/74,784
  6. Step 6: Final answer
    x = 137,553.86

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.