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Finding the Fourth Proportional to 178,434.90, 267,425.55 and 73,134.90

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Solution

The fourth proportional to 178,434.90, 267,425.55 and 73,134.90 is: 109,609.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,434.90 : 267,425.55 = 73,134.90 : x
  2. Step 2: Convert to fraction form
    178,434.90/267,425.55 = 73,134.90/x
  3. Step 3: Cross multiply
    178,434.90x = 267,425.55 × 73,134.90
  4. Step 4: Simplify right side
    178,434.90x = 19,558,140,856.70
  5. Step 5: Solve for x
    x = 19,558,140,856.70/178,434.90
  6. Step 6: Final answer
    x = 109,609.39

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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.