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Finding the Fourth Proportional to 57,766.96, 86,650.44 and 31,493.80

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Solution

The fourth proportional to 57,766.96, 86,650.44 and 31,493.80 is: 47,240.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,766.96 : 86,650.44 = 31,493.80 : x
  2. Step 2: Convert to fraction form
    57,766.96/86,650.44 = 31,493.80/x
  3. Step 3: Cross multiply
    57,766.96x = 86,650.44 × 31,493.80
  4. Step 4: Simplify right side
    57,766.96x = 2,728,951,627.27
  5. Step 5: Solve for x
    x = 2,728,951,627.27/57,766.96
  6. Step 6: Final answer
    x = 47,240.70

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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.