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Finding the Fourth Proportional to 41,605.10, 62,407.65 and 20,825.90

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Solution

The fourth proportional to 41,605.10, 62,407.65 and 20,825.90 is: 31,238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,605.10 : 62,407.65 = 20,825.90 : x
  2. Step 2: Convert to fraction form
    41,605.10/62,407.65 = 20,825.90/x
  3. Step 3: Cross multiply
    41,605.10x = 62,407.65 × 20,825.90
  4. Step 4: Simplify right side
    41,605.10x = 1,299,695,478.14
  5. Step 5: Solve for x
    x = 1,299,695,478.14/41,605.10
  6. Step 6: Final answer
    x = 31,238.85

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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.