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Finding the Fourth Proportional to 80,628.91, 111,269.22 and 44,331.88

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Solution

The fourth proportional to 80,628.91, 111,269.22 and 44,331.88 is: 61,178.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,628.91 : 111,269.22 = 44,331.88 : x
  2. Step 2: Convert to fraction form
    80,628.91/111,269.22 = 44,331.88/x
  3. Step 3: Cross multiply
    80,628.91x = 111,269.22 × 44,331.88
  4. Step 4: Simplify right side
    80,628.91x = 4,932,773,708.73
  5. Step 5: Solve for x
    x = 4,932,773,708.73/80,628.91
  6. Step 6: Final answer
    x = 61,178.72

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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.