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Finding the Fourth Proportional to 18,475.62, 27,716.16 and 6,787.92

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Solution

The fourth proportional to 18,475.62, 27,716.16 and 6,787.92 is: 10,182.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,475.62 : 27,716.16 = 6,787.92 : x
  2. Step 2: Convert to fraction form
    18,475.62/27,716.16 = 6,787.92/x
  3. Step 3: Cross multiply
    18,475.62x = 27,716.16 × 6,787.92
  4. Step 4: Simplify right side
    18,475.62x = 188,135,076.79
  5. Step 5: Solve for x
    x = 188,135,076.79/18,475.62
  6. Step 6: Final answer
    x = 10,182.88

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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.