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Finding the Fourth Proportional to 157,400.70, 236,129.85 and 63,915.90

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Solution

The fourth proportional to 157,400.70, 236,129.85 and 63,915.90 is: 95,885.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,400.70 : 236,129.85 = 63,915.90 : x
  2. Step 2: Convert to fraction form
    157,400.70/236,129.85 = 63,915.90/x
  3. Step 3: Cross multiply
    157,400.70x = 236,129.85 × 63,915.90
  4. Step 4: Simplify right side
    157,400.70x = 15,092,451,879.62
  5. Step 5: Solve for x
    x = 15,092,451,879.62/157,400.70
  6. Step 6: Final answer
    x = 95,885.54

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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.