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Finding the Fourth Proportional to 18,551.66, 27,841.16 and 13,634.55

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Solution

The fourth proportional to 18,551.66, 27,841.16 and 13,634.55 is: 20,461.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.66 : 27,841.16 = 13,634.55 : x
  2. Step 2: Convert to fraction form
    18,551.66/27,841.16 = 13,634.55/x
  3. Step 3: Cross multiply
    18,551.66x = 27,841.16 × 13,634.55
  4. Step 4: Simplify right side
    18,551.66x = 379,601,722.16
  5. Step 5: Solve for x
    x = 379,601,722.16/18,551.66
  6. Step 6: Final answer
    x = 20,461.88

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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.