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Finding the Fourth Proportional to 13,896.25, 19,179.80 and 8,859.31

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Solution

The fourth proportional to 13,896.25, 19,179.80 and 8,859.31 is: 12,227.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896.25 : 19,179.80 = 8,859.31 : x
  2. Step 2: Convert to fraction form
    13,896.25/19,179.80 = 8,859.31/x
  3. Step 3: Cross multiply
    13,896.25x = 19,179.80 × 8,859.31
  4. Step 4: Simplify right side
    13,896.25x = 169,919,734.91
  5. Step 5: Solve for x
    x = 169,919,734.91/13,896.25
  6. Step 6: Final answer
    x = 12,227.74

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