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Finding the Fourth Proportional to 41,391.80, 62,102.72 and 25,578.40

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Solution

The fourth proportional to 41,391.80, 62,102.72 and 25,578.40 is: 38,376.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,391.80 : 62,102.72 = 25,578.40 : x
  2. Step 2: Convert to fraction form
    41,391.80/62,102.72 = 25,578.40/x
  3. Step 3: Cross multiply
    41,391.80x = 62,102.72 × 25,578.40
  4. Step 4: Simplify right side
    41,391.80x = 1,588,488,213.25
  5. Step 5: Solve for x
    x = 1,588,488,213.25/41,391.80
  6. Step 6: Final answer
    x = 38,376.88

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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.