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Finding the Fourth Proportional to 6,866.87, 9,475.76 and 4,631.78

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Solution

The fourth proportional to 6,866.87, 9,475.76 and 4,631.78 is: 6,391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,866.87 : 9,475.76 = 4,631.78 : x
  2. Step 2: Convert to fraction form
    6,866.87/9,475.76 = 4,631.78/x
  3. Step 3: Cross multiply
    6,866.87x = 9,475.76 × 4,631.78
  4. Step 4: Simplify right side
    6,866.87x = 43,889,565.12
  5. Step 5: Solve for x
    x = 43,889,565.12/6,866.87
  6. Step 6: Final answer
    x = 6,391.50

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