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Finding the Fourth Proportional to 80,791.09, 121,241.99 and 28,200.58

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Solution

The fourth proportional to 80,791.09, 121,241.99 and 28,200.58 is: 42,320.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,791.09 : 121,241.99 = 28,200.58 : x
  2. Step 2: Convert to fraction form
    80,791.09/121,241.99 = 28,200.58/x
  3. Step 3: Cross multiply
    80,791.09x = 121,241.99 × 28,200.58
  4. Step 4: Simplify right side
    80,791.09x = 3,419,094,205.75
  5. Step 5: Solve for x
    x = 3,419,094,205.75/80,791.09
  6. Step 6: Final answer
    x = 42,320.19

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