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Finding the Fourth Proportional to 156,896.60, 216,519.50 and 85,276.60

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Solution

The fourth proportional to 156,896.60, 216,519.50 and 85,276.60 is: 117,682.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,896.60 : 216,519.50 = 85,276.60 : x
  2. Step 2: Convert to fraction form
    156,896.60/216,519.50 = 85,276.60/x
  3. Step 3: Cross multiply
    156,896.60x = 216,519.50 × 85,276.60
  4. Step 4: Simplify right side
    156,896.60x = 18,464,046,793.70
  5. Step 5: Solve for x
    x = 18,464,046,793.70/156,896.60
  6. Step 6: Final answer
    x = 117,682.90

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