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Finding the Fourth Proportional to 13,463.48, 20,198.56 and 7,921.44

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Solution

The fourth proportional to 13,463.48, 20,198.56 and 7,921.44 is: 11,884.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,463.48 : 20,198.56 = 7,921.44 : x
  2. Step 2: Convert to fraction form
    13,463.48/20,198.56 = 7,921.44/x
  3. Step 3: Cross multiply
    13,463.48x = 20,198.56 × 7,921.44
  4. Step 4: Simplify right side
    13,463.48x = 160,001,681.13
  5. Step 5: Solve for x
    x = 160,001,681.13/13,463.48
  6. Step 6: Final answer
    x = 11,884.13

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