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Finding the Fourth Proportional to 178,245.97, 267,377.15 and 72,991.13

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Solution

The fourth proportional to 178,245.97, 267,377.15 and 72,991.13 is: 109,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,245.97 : 267,377.15 = 72,991.13 : x
  2. Step 2: Convert to fraction form
    178,245.97/267,377.15 = 72,991.13/x
  3. Step 3: Cross multiply
    178,245.97x = 267,377.15 × 72,991.13
  4. Step 4: Simplify right side
    178,245.97x = 19,516,159,160.27
  5. Step 5: Solve for x
    x = 19,516,159,160.27/178,245.97
  6. Step 6: Final answer
    x = 109,490.05

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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.