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Finding the Fourth Proportional to 156,790.65, 216,371.48 and 85,169.17

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Solution

The fourth proportional to 156,790.65, 216,371.48 and 85,169.17 is: 117,533.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,790.65 : 216,371.48 = 85,169.17 : x
  2. Step 2: Convert to fraction form
    156,790.65/216,371.48 = 85,169.17/x
  3. Step 3: Cross multiply
    156,790.65x = 216,371.48 × 85,169.17
  4. Step 4: Simplify right side
    156,790.65x = 18,428,179,363.27
  5. Step 5: Solve for x
    x = 18,428,179,363.27/156,790.65
  6. Step 6: Final answer
    x = 117,533.66

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