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Finding the Fourth Proportional to 107,857.20, 161,785.80 and 104,228.40

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Solution

The fourth proportional to 107,857.20, 161,785.80 and 104,228.40 is: 156,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,857.20 : 161,785.80 = 104,228.40 : x
  2. Step 2: Convert to fraction form
    107,857.20/161,785.80 = 104,228.40/x
  3. Step 3: Cross multiply
    107,857.20x = 161,785.80 × 104,228.40
  4. Step 4: Simplify right side
    107,857.20x = 16,862,675,076.72
  5. Step 5: Solve for x
    x = 16,862,675,076.72/107,857.20
  6. Step 6: Final answer
    x = 156,342.60

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