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Finding the Fourth Proportional to 18,701.38, 28,046.34 and 6,218.14

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Solution

The fourth proportional to 18,701.38, 28,046.34 and 6,218.14 is: 9,325.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.38 : 28,046.34 = 6,218.14 : x
  2. Step 2: Convert to fraction form
    18,701.38/28,046.34 = 6,218.14/x
  3. Step 3: Cross multiply
    18,701.38x = 28,046.34 × 6,218.14
  4. Step 4: Simplify right side
    18,701.38x = 174,396,068.61
  5. Step 5: Solve for x
    x = 174,396,068.61/18,701.38
  6. Step 6: Final answer
    x = 9,325.30

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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.