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Finding the Fourth Proportional to 140,932, 211,398 and 42,436

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Solution

The fourth proportional to 140,932, 211,398 and 42,436 is: 63,654

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,932 : 211,398 = 42,436 : x
  2. Step 2: Convert to fraction form
    140,932/211,398 = 42,436/x
  3. Step 3: Cross multiply
    140,932x = 211,398 × 42,436
  4. Step 4: Simplify right side
    140,932x = 8,970,885,528
  5. Step 5: Solve for x
    x = 8,970,885,528/140,932
  6. Step 6: Final answer
    x = 63,654

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.