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Finding the Fourth Proportional to 18,438.73, 27,582.15 and 16,867.28

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Solution

The fourth proportional to 18,438.73, 27,582.15 and 16,867.28 is: 25,231.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.73 : 27,582.15 = 16,867.28 : x
  2. Step 2: Convert to fraction form
    18,438.73/27,582.15 = 16,867.28/x
  3. Step 3: Cross multiply
    18,438.73x = 27,582.15 × 16,867.28
  4. Step 4: Simplify right side
    18,438.73x = 465,235,847.05
  5. Step 5: Solve for x
    x = 465,235,847.05/18,438.73
  6. Step 6: Final answer
    x = 25,231.45

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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.