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Finding the Fourth Proportional to 18,548.91, 27,830.21 and 8,691.39

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Solution

The fourth proportional to 18,548.91, 27,830.21 and 8,691.39 is: 13,040.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,548.91 : 27,830.21 = 8,691.39 : x
  2. Step 2: Convert to fraction form
    18,548.91/27,830.21 = 8,691.39/x
  3. Step 3: Cross multiply
    18,548.91x = 27,830.21 × 8,691.39
  4. Step 4: Simplify right side
    18,548.91x = 241,883,165.43
  5. Step 5: Solve for x
    x = 241,883,165.43/18,548.91
  6. Step 6: Final answer
    x = 13,040.29

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.