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Finding the Fourth Proportional to 57,769.71, 86,659.43 and 20,325.84

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Solution

The fourth proportional to 57,769.71, 86,659.43 and 20,325.84 is: 30,490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,769.71 : 86,659.43 = 20,325.84 : x
  2. Step 2: Convert to fraction form
    57,769.71/86,659.43 = 20,325.84/x
  3. Step 3: Cross multiply
    57,769.71x = 86,659.43 × 20,325.84
  4. Step 4: Simplify right side
    57,769.71x = 1,761,425,607.04
  5. Step 5: Solve for x
    x = 1,761,425,607.04/57,769.71
  6. Step 6: Final answer
    x = 30,490.47

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