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Finding the Fourth Proportional to 13,651.92, 20,474.98 and 3,788.55

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Solution

The fourth proportional to 13,651.92, 20,474.98 and 3,788.55 is: 5,682.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.92 : 20,474.98 = 3,788.55 : x
  2. Step 2: Convert to fraction form
    13,651.92/20,474.98 = 3,788.55/x
  3. Step 3: Cross multiply
    13,651.92x = 20,474.98 × 3,788.55
  4. Step 4: Simplify right side
    13,651.92x = 77,570,476.01
  5. Step 5: Solve for x
    x = 77,570,476.01/13,651.92
  6. Step 6: Final answer
    x = 5,682.02

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