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Finding the Fourth Proportional to 25,540.40, 38,228.52 and 13,664.54

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Solution

The fourth proportional to 25,540.40, 38,228.52 and 13,664.54 is: 20,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,540.40 : 38,228.52 = 13,664.54 : x
  2. Step 2: Convert to fraction form
    25,540.40/38,228.52 = 13,664.54/x
  3. Step 3: Cross multiply
    25,540.40x = 38,228.52 × 13,664.54
  4. Step 4: Simplify right side
    25,540.40x = 522,375,140.68
  5. Step 5: Solve for x
    x = 522,375,140.68/25,540.40
  6. Step 6: Final answer
    x = 20,452.90

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