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Finding the Fourth Proportional to 28,449.72, 39,260.76 and 15,874.56

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Solution

The fourth proportional to 28,449.72, 39,260.76 and 15,874.56 is: 21,906.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.72 : 39,260.76 = 15,874.56 : x
  2. Step 2: Convert to fraction form
    28,449.72/39,260.76 = 15,874.56/x
  3. Step 3: Cross multiply
    28,449.72x = 39,260.76 × 15,874.56
  4. Step 4: Simplify right side
    28,449.72x = 623,247,290.27
  5. Step 5: Solve for x
    x = 623,247,290.27/28,449.72
  6. Step 6: Final answer
    x = 21,906.97

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