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Finding the Fourth Proportional to 74,769.82, 112,121.92 and 27,989.89

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Solution

The fourth proportional to 74,769.82, 112,121.92 and 27,989.89 is: 41,972.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,769.82 : 112,121.92 = 27,989.89 : x
  2. Step 2: Convert to fraction form
    74,769.82/112,121.92 = 27,989.89/x
  3. Step 3: Cross multiply
    74,769.82x = 112,121.92 × 27,989.89
  4. Step 4: Simplify right side
    74,769.82x = 3,138,280,207.39
  5. Step 5: Solve for x
    x = 3,138,280,207.39/74,769.82
  6. Step 6: Final answer
    x = 41,972.55

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