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Finding the Fourth Proportional to 91,372.80, 137,059.20 and 41,452.80

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Solution

The fourth proportional to 91,372.80, 137,059.20 and 41,452.80 is: 62,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,372.80 : 137,059.20 = 41,452.80 : x
  2. Step 2: Convert to fraction form
    91,372.80/137,059.20 = 41,452.80/x
  3. Step 3: Cross multiply
    91,372.80x = 137,059.20 × 41,452.80
  4. Step 4: Simplify right side
    91,372.80x = 5,681,487,605.76
  5. Step 5: Solve for x
    x = 5,681,487,605.76/91,372.80
  6. Step 6: Final answer
    x = 62,179.20

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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.