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Finding the Fourth Proportional to 132,780.38, 183,234.57 and 72,351.44

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Solution

The fourth proportional to 132,780.38, 183,234.57 and 72,351.44 is: 99,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,780.38 : 183,234.57 = 72,351.44 : x
  2. Step 2: Convert to fraction form
    132,780.38/183,234.57 = 72,351.44/x
  3. Step 3: Cross multiply
    132,780.38x = 183,234.57 × 72,351.44
  4. Step 4: Simplify right side
    132,780.38x = 13,257,284,997.28
  5. Step 5: Solve for x
    x = 13,257,284,997.28/132,780.38
  6. Step 6: Final answer
    x = 99,843.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.