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Finding the Fourth Proportional to 99,776.26, 137,687.79 and 59,469.27

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Solution

The fourth proportional to 99,776.26, 137,687.79 and 59,469.27 is: 82,065.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,776.26 : 137,687.79 = 59,469.27 : x
  2. Step 2: Convert to fraction form
    99,776.26/137,687.79 = 59,469.27/x
  3. Step 3: Cross multiply
    99,776.26x = 137,687.79 × 59,469.27
  4. Step 4: Simplify right side
    99,776.26x = 8,188,192,359.21
  5. Step 5: Solve for x
    x = 8,188,192,359.21/99,776.26
  6. Step 6: Final answer
    x = 82,065.54

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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.