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Finding the Fourth Proportional to 13,617.48, 20,420.97 and 5,296.39

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Solution

The fourth proportional to 13,617.48, 20,420.97 and 5,296.39 is: 7,942.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.48 : 20,420.97 = 5,296.39 : x
  2. Step 2: Convert to fraction form
    13,617.48/20,420.97 = 5,296.39/x
  3. Step 3: Cross multiply
    13,617.48x = 20,420.97 × 5,296.39
  4. Step 4: Simplify right side
    13,617.48x = 108,157,421.30
  5. Step 5: Solve for x
    x = 108,157,421.30/13,617.48
  6. Step 6: Final answer
    x = 7,942.54

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