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Finding the Fourth Proportional to 18,474.57, 27,711.86 and 11,069.75

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Solution

The fourth proportional to 18,474.57, 27,711.86 and 11,069.75 is: 16,604.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.57 : 27,711.86 = 11,069.75 : x
  2. Step 2: Convert to fraction form
    18,474.57/27,711.86 = 11,069.75/x
  3. Step 3: Cross multiply
    18,474.57x = 27,711.86 × 11,069.75
  4. Step 4: Simplify right side
    18,474.57x = 306,763,376.17
  5. Step 5: Solve for x
    x = 306,763,376.17/18,474.57
  6. Step 6: Final answer
    x = 16,604.63

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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.