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Finding the Fourth Proportional to 18,446.82, 27,621.01 and 9,663.31

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Solution

The fourth proportional to 18,446.82, 27,621.01 and 9,663.31 is: 14,469.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,446.82 : 27,621.01 = 9,663.31 : x
  2. Step 2: Convert to fraction form
    18,446.82/27,621.01 = 9,663.31/x
  3. Step 3: Cross multiply
    18,446.82x = 27,621.01 × 9,663.31
  4. Step 4: Simplify right side
    18,446.82x = 266,910,382.14
  5. Step 5: Solve for x
    x = 266,910,382.14/18,446.82
  6. Step 6: Final answer
    x = 14,469.18

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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.