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Finding the Fourth Proportional to 69,912.52, 96,480.12 and 38,081.68

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Solution

The fourth proportional to 69,912.52, 96,480.12 and 38,081.68 is: 52,553.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,912.52 : 96,480.12 = 38,081.68 : x
  2. Step 2: Convert to fraction form
    69,912.52/96,480.12 = 38,081.68/x
  3. Step 3: Cross multiply
    69,912.52x = 96,480.12 × 38,081.68
  4. Step 4: Simplify right side
    69,912.52x = 3,674,125,056.20
  5. Step 5: Solve for x
    x = 3,674,125,056.20/69,912.52
  6. Step 6: Final answer
    x = 52,553.18

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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.