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Finding the Fourth Proportional to 18,474.21, 27,713.67 and 8,476.53

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Solution

The fourth proportional to 18,474.21, 27,713.67 and 8,476.53 is: 12,715.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.21 : 27,713.67 = 8,476.53 : x
  2. Step 2: Convert to fraction form
    18,474.21/27,713.67 = 8,476.53/x
  3. Step 3: Cross multiply
    18,474.21x = 27,713.67 × 8,476.53
  4. Step 4: Simplify right side
    18,474.21x = 234,915,755.17
  5. Step 5: Solve for x
    x = 234,915,755.17/18,474.21
  6. Step 6: Final answer
    x = 12,715.88

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1.5x scale

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.