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Finding the Fourth Proportional to 18,422.53, 27,631.10 and 9,060.03

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Solution

The fourth proportional to 18,422.53, 27,631.10 and 9,060.03 is: 13,588.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.53 : 27,631.10 = 9,060.03 : x
  2. Step 2: Convert to fraction form
    18,422.53/27,631.10 = 9,060.03/x
  3. Step 3: Cross multiply
    18,422.53x = 27,631.10 × 9,060.03
  4. Step 4: Simplify right side
    18,422.53x = 250,338,669.81
  5. Step 5: Solve for x
    x = 250,338,669.81/18,422.53
  6. Step 6: Final answer
    x = 13,588.73

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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.