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Finding the Fourth Proportional to 18,379.61, 27,361.56 and 18,270.26

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Solution

The fourth proportional to 18,379.61, 27,361.56 and 18,270.26 is: 27,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.61 : 27,361.56 = 18,270.26 : x
  2. Step 2: Convert to fraction form
    18,379.61/27,361.56 = 18,270.26/x
  3. Step 3: Cross multiply
    18,379.61x = 27,361.56 × 18,270.26
  4. Step 4: Simplify right side
    18,379.61x = 499,902,952.12
  5. Step 5: Solve for x
    x = 499,902,952.12/18,379.61
  6. Step 6: Final answer
    x = 27,198.78

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.