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Finding the Fourth Proportional to 57,447.79, 86,125.20 and 25,834.70

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Solution

The fourth proportional to 57,447.79, 86,125.20 and 25,834.70 is: 38,731.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,447.79 : 86,125.20 = 25,834.70 : x
  2. Step 2: Convert to fraction form
    57,447.79/86,125.20 = 25,834.70/x
  3. Step 3: Cross multiply
    57,447.79x = 86,125.20 × 25,834.70
  4. Step 4: Simplify right side
    57,447.79x = 2,225,018,704.44
  5. Step 5: Solve for x
    x = 2,225,018,704.44/57,447.79
  6. Step 6: Final answer
    x = 38,731.15

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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.