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Finding the Fourth Proportional to 18,474.54, 27,723.36 and 7,379.52

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Solution

The fourth proportional to 18,474.54, 27,723.36 and 7,379.52 is: 11,073.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.54 : 27,723.36 = 7,379.52 : x
  2. Step 2: Convert to fraction form
    18,474.54/27,723.36 = 7,379.52/x
  3. Step 3: Cross multiply
    18,474.54x = 27,723.36 × 7,379.52
  4. Step 4: Simplify right side
    18,474.54x = 204,585,089.59
  5. Step 5: Solve for x
    x = 204,585,089.59/18,474.54
  6. Step 6: Final answer
    x = 11,073.89

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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.