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Finding the Fourth Proportional to 8,619.92, 11,898.51 and 5,082.91

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Solution

The fourth proportional to 8,619.92, 11,898.51 and 5,082.91 is: 7,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.92 : 11,898.51 = 5,082.91 : x
  2. Step 2: Convert to fraction form
    8,619.92/11,898.51 = 5,082.91/x
  3. Step 3: Cross multiply
    8,619.92x = 11,898.51 × 5,082.91
  4. Step 4: Simplify right side
    8,619.92x = 60,479,055.46
  5. Step 5: Solve for x
    x = 60,479,055.46/8,619.92
  6. Step 6: Final answer
    x = 7,016.20

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