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Finding the Fourth Proportional to 120,760.64, 166,591.78 and 84,970.40

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Solution

The fourth proportional to 120,760.64, 166,591.78 and 84,970.40 is: 117,218.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,760.64 : 166,591.78 = 84,970.40 : x
  2. Step 2: Convert to fraction form
    120,760.64/166,591.78 = 84,970.40/x
  3. Step 3: Cross multiply
    120,760.64x = 166,591.78 × 84,970.40
  4. Step 4: Simplify right side
    120,760.64x = 14,155,370,183.31
  5. Step 5: Solve for x
    x = 14,155,370,183.31/120,760.64
  6. Step 6: Final answer
    x = 117,218.41

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