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Finding the Fourth Proportional to 68,909.92, 95,051.20 and 47,389.92

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Solution

The fourth proportional to 68,909.92, 95,051.20 and 47,389.92 is: 65,367.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,909.92 : 95,051.20 = 47,389.92 : x
  2. Step 2: Convert to fraction form
    68,909.92/95,051.20 = 47,389.92/x
  3. Step 3: Cross multiply
    68,909.92x = 95,051.20 × 47,389.92
  4. Step 4: Simplify right side
    68,909.92x = 4,504,468,763.90
  5. Step 5: Solve for x
    x = 4,504,468,763.90/68,909.92
  6. Step 6: Final answer
    x = 65,367.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.