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Finding the Fourth Proportional to 41,885.85, 62,831.18 and 13,425.31

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Solution

The fourth proportional to 41,885.85, 62,831.18 and 13,425.31 is: 20,138.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,885.85 : 62,831.18 = 13,425.31 : x
  2. Step 2: Convert to fraction form
    41,885.85/62,831.18 = 13,425.31/x
  3. Step 3: Cross multiply
    41,885.85x = 62,831.18 × 13,425.31
  4. Step 4: Simplify right side
    41,885.85x = 843,528,069.17
  5. Step 5: Solve for x
    x = 843,528,069.17/41,885.85
  6. Step 6: Final answer
    x = 20,138.74

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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.