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Finding the Fourth Proportional to 83,607.70, 125,452.55 and 39,238.06

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Solution

The fourth proportional to 83,607.70, 125,452.55 and 39,238.06 is: 58,876.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,607.70 : 125,452.55 = 39,238.06 : x
  2. Step 2: Convert to fraction form
    83,607.70/125,452.55 = 39,238.06/x
  3. Step 3: Cross multiply
    83,607.70x = 125,452.55 × 39,238.06
  4. Step 4: Simplify right side
    83,607.70x = 4,922,513,860.60
  5. Step 5: Solve for x
    x = 4,922,513,860.60/83,607.70
  6. Step 6: Final answer
    x = 58,876.33

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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.