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Finding the Fourth Proportional to 83,566.56, 115,322.38 and 47,757.90

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Solution

The fourth proportional to 83,566.56, 115,322.38 and 47,757.90 is: 65,906.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,566.56 : 115,322.38 = 47,757.90 : x
  2. Step 2: Convert to fraction form
    83,566.56/115,322.38 = 47,757.90/x
  3. Step 3: Cross multiply
    83,566.56x = 115,322.38 × 47,757.90
  4. Step 4: Simplify right side
    83,566.56x = 5,507,554,691.80
  5. Step 5: Solve for x
    x = 5,507,554,691.80/83,566.56
  6. Step 6: Final answer
    x = 65,906.20

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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.