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Finding the Fourth Proportional to 71,986.99, 107,892.92 and 50,933.11

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Solution

The fourth proportional to 71,986.99, 107,892.92 and 50,933.11 is: 76,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,986.99 : 107,892.92 = 50,933.11 : x
  2. Step 2: Convert to fraction form
    71,986.99/107,892.92 = 50,933.11/x
  3. Step 3: Cross multiply
    71,986.99x = 107,892.92 × 50,933.11
  4. Step 4: Simplify right side
    71,986.99x = 5,495,321,614.12
  5. Step 5: Solve for x
    x = 5,495,321,614.12/71,986.99
  6. Step 6: Final answer
    x = 76,337.70

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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.