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Finding the Fourth Proportional to 5,718.68, 8,573.80 and 3,865.20

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Solution

The fourth proportional to 5,718.68, 8,573.80 and 3,865.20 is: 5,794.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.68 : 8,573.80 = 3,865.20 : x
  2. Step 2: Convert to fraction form
    5,718.68/8,573.80 = 3,865.20/x
  3. Step 3: Cross multiply
    5,718.68x = 8,573.80 × 3,865.20
  4. Step 4: Simplify right side
    5,718.68x = 33,139,451.76
  5. Step 5: Solve for x
    x = 33,139,451.76/5,718.68
  6. Step 6: Final answer
    x = 5,794.95

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