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Finding the Fourth Proportional to 57,269.76, 79,036.80 and 31,778.64

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Solution

The fourth proportional to 57,269.76, 79,036.80 and 31,778.64 is: 43,857.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,269.76 : 79,036.80 = 31,778.64 : x
  2. Step 2: Convert to fraction form
    57,269.76/79,036.80 = 31,778.64/x
  3. Step 3: Cross multiply
    57,269.76x = 79,036.80 × 31,778.64
  4. Step 4: Simplify right side
    57,269.76x = 2,511,682,013.95
  5. Step 5: Solve for x
    x = 2,511,682,013.95/57,269.76
  6. Step 6: Final answer
    x = 43,857.04

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