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Finding the Fourth Proportional to 18,652.46, 27,981.42 and 11,626.72

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Solution

The fourth proportional to 18,652.46, 27,981.42 and 11,626.72 is: 17,441.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.46 : 27,981.42 = 11,626.72 : x
  2. Step 2: Convert to fraction form
    18,652.46/27,981.42 = 11,626.72/x
  3. Step 3: Cross multiply
    18,652.46x = 27,981.42 × 11,626.72
  4. Step 4: Simplify right side
    18,652.46x = 325,332,135.54
  5. Step 5: Solve for x
    x = 325,332,135.54/18,652.46
  6. Step 6: Final answer
    x = 17,441.78

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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.