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Finding the Fourth Proportional to 72,387.85, 108,583.35 and 50,952.97

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Solution

The fourth proportional to 72,387.85, 108,583.35 and 50,952.97 is: 76,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,387.85 : 108,583.35 = 50,952.97 : x
  2. Step 2: Convert to fraction form
    72,387.85/108,583.35 = 50,952.97/x
  3. Step 3: Cross multiply
    72,387.85x = 108,583.35 × 50,952.97
  4. Step 4: Simplify right side
    72,387.85x = 5,532,644,175.05
  5. Step 5: Solve for x
    x = 5,532,644,175.05/72,387.85
  6. Step 6: Final answer
    x = 76,430.56

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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.