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Finding the Fourth Proportional to 79,562.28, 109,788.44 and 47,294.31

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Solution

The fourth proportional to 79,562.28, 109,788.44 and 47,294.31 is: 65,261.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,562.28 : 109,788.44 = 47,294.31 : x
  2. Step 2: Convert to fraction form
    79,562.28/109,788.44 = 47,294.31/x
  3. Step 3: Cross multiply
    79,562.28x = 109,788.44 × 47,294.31
  4. Step 4: Simplify right side
    79,562.28x = 5,192,368,279.30
  5. Step 5: Solve for x
    x = 5,192,368,279.30/79,562.28
  6. Step 6: Final answer
    x = 65,261.68

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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.