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Finding the Fourth Proportional to 41,872.80, 62,809.20 and 15,572.10

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Solution

The fourth proportional to 41,872.80, 62,809.20 and 15,572.10 is: 23,358.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,872.80 : 62,809.20 = 15,572.10 : x
  2. Step 2: Convert to fraction form
    41,872.80/62,809.20 = 15,572.10/x
  3. Step 3: Cross multiply
    41,872.80x = 62,809.20 × 15,572.10
  4. Step 4: Simplify right side
    41,872.80x = 978,071,143.32
  5. Step 5: Solve for x
    x = 978,071,143.32/41,872.80
  6. Step 6: Final answer
    x = 23,358.15

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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.