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Finding the Fourth Proportional to 5,322.78, 7,339.87 and 3,976.28

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Solution

The fourth proportional to 5,322.78, 7,339.87 and 3,976.28 is: 5,483.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,322.78 : 7,339.87 = 3,976.28 : x
  2. Step 2: Convert to fraction form
    5,322.78/7,339.87 = 3,976.28/x
  3. Step 3: Cross multiply
    5,322.78x = 7,339.87 × 3,976.28
  4. Step 4: Simplify right side
    5,322.78x = 29,185,378.28
  5. Step 5: Solve for x
    x = 29,185,378.28/5,322.78
  6. Step 6: Final answer
    x = 5,483.11

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