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Finding the Fourth Proportional to 18,474.62, 27,716.02 and 5,325.96

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Solution

The fourth proportional to 18,474.62, 27,716.02 and 5,325.96 is: 7,990.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.62 : 27,716.02 = 5,325.96 : x
  2. Step 2: Convert to fraction form
    18,474.62/27,716.02 = 5,325.96/x
  3. Step 3: Cross multiply
    18,474.62x = 27,716.02 × 5,325.96
  4. Step 4: Simplify right side
    18,474.62x = 147,614,456.51
  5. Step 5: Solve for x
    x = 147,614,456.51/18,474.62
  6. Step 6: Final answer
    x = 7,990.12

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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.