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Finding the Fourth Proportional to 79,721.52, 109,940.76 and 59,624.88

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Solution

The fourth proportional to 79,721.52, 109,940.76 and 59,624.88 is: 82,226.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,721.52 : 109,940.76 = 59,624.88 : x
  2. Step 2: Convert to fraction form
    79,721.52/109,940.76 = 59,624.88/x
  3. Step 3: Cross multiply
    79,721.52x = 109,940.76 × 59,624.88
  4. Step 4: Simplify right side
    79,721.52x = 6,555,204,622.11
  5. Step 5: Solve for x
    x = 6,555,204,622.11/79,721.52
  6. Step 6: Final answer
    x = 82,226.29

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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.