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Finding the Fourth Proportional to 18,343.61, 27,516.49 and 5,194.88

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Solution

The fourth proportional to 18,343.61, 27,516.49 and 5,194.88 is: 7,792.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.61 : 27,516.49 = 5,194.88 : x
  2. Step 2: Convert to fraction form
    18,343.61/27,516.49 = 5,194.88/x
  3. Step 3: Cross multiply
    18,343.61x = 27,516.49 × 5,194.88
  4. Step 4: Simplify right side
    18,343.61x = 142,944,863.57
  5. Step 5: Solve for x
    x = 142,944,863.57/18,343.61
  6. Step 6: Final answer
    x = 7,792.62

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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.