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Finding the Fourth Proportional to 259,115.52, 388,644.48 and 69,591.84

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Solution

The fourth proportional to 259,115.52, 388,644.48 and 69,591.84 is: 104,380.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,115.52 : 388,644.48 = 69,591.84 : x
  2. Step 2: Convert to fraction form
    259,115.52/388,644.48 = 69,591.84/x
  3. Step 3: Cross multiply
    259,115.52x = 388,644.48 × 69,591.84
  4. Step 4: Simplify right side
    259,115.52x = 27,046,484,469.04
  5. Step 5: Solve for x
    x = 27,046,484,469.04/259,115.52
  6. Step 6: Final answer
    x = 104,380.03

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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.