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Finding the Fourth Proportional to 6,715.78, 9,267.85 and 3,731.60

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Solution

The fourth proportional to 6,715.78, 9,267.85 and 3,731.60 is: 5,149.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,715.78 : 9,267.85 = 3,731.60 : x
  2. Step 2: Convert to fraction form
    6,715.78/9,267.85 = 3,731.60/x
  3. Step 3: Cross multiply
    6,715.78x = 9,267.85 × 3,731.60
  4. Step 4: Simplify right side
    6,715.78x = 34,583,936.89
  5. Step 5: Solve for x
    x = 34,583,936.89/6,715.78
  6. Step 6: Final answer
    x = 5,149.65

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