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Finding the Fourth Proportional to 3,712.17, 5,571.90 and 2,789.99

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Solution

The fourth proportional to 3,712.17, 5,571.90 and 2,789.99 is: 4,187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.17 : 5,571.90 = 2,789.99 : x
  2. Step 2: Convert to fraction form
    3,712.17/5,571.90 = 2,789.99/x
  3. Step 3: Cross multiply
    3,712.17x = 5,571.90 × 2,789.99
  4. Step 4: Simplify right side
    3,712.17x = 15,545,517.42
  5. Step 5: Solve for x
    x = 15,545,517.42/3,712.17
  6. Step 6: Final answer
    x = 4,187.72

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