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Finding the Fourth Proportional to 83,607.85, 125,452.78 and 39,238.21

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Solution

The fourth proportional to 83,607.85, 125,452.78 and 39,238.21 is: 58,876.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,607.85 : 125,452.78 = 39,238.21 : x
  2. Step 2: Convert to fraction form
    83,607.85/125,452.78 = 39,238.21/x
  3. Step 3: Cross multiply
    83,607.85x = 125,452.78 × 39,238.21
  4. Step 4: Simplify right side
    83,607.85x = 4,922,542,526.72
  5. Step 5: Solve for x
    x = 4,922,542,526.72/83,607.85
  6. Step 6: Final answer
    x = 58,876.56

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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.