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Finding the Fourth Proportional to 71,388.36, 107,073.46 and 18,801.96

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Solution

The fourth proportional to 71,388.36, 107,073.46 and 18,801.96 is: 28,200.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,388.36 : 107,073.46 = 18,801.96 : x
  2. Step 2: Convert to fraction form
    71,388.36/107,073.46 = 18,801.96/x
  3. Step 3: Cross multiply
    71,388.36x = 107,073.46 × 18,801.96
  4. Step 4: Simplify right side
    71,388.36x = 2,013,190,911.98
  5. Step 5: Solve for x
    x = 2,013,190,911.98/71,388.36
  6. Step 6: Final answer
    x = 28,200.55

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