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Finding the Fourth Proportional to 36,672.72, 55,015.20 and 13,331.76

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Solution

The fourth proportional to 36,672.72, 55,015.20 and 13,331.76 is: 19,999.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,672.72 : 55,015.20 = 13,331.76 : x
  2. Step 2: Convert to fraction form
    36,672.72/55,015.20 = 13,331.76/x
  3. Step 3: Cross multiply
    36,672.72x = 55,015.20 × 13,331.76
  4. Step 4: Simplify right side
    36,672.72x = 733,449,442.75
  5. Step 5: Solve for x
    x = 733,449,442.75/36,672.72
  6. Step 6: Final answer
    x = 19,999.86

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