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Finding the Fourth Proportional to 7,857.36, 11,786.78 and 2,310.70

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Solution

The fourth proportional to 7,857.36, 11,786.78 and 2,310.70 is: 3,466.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.36 : 11,786.78 = 2,310.70 : x
  2. Step 2: Convert to fraction form
    7,857.36/11,786.78 = 2,310.70/x
  3. Step 3: Cross multiply
    7,857.36x = 11,786.78 × 2,310.70
  4. Step 4: Simplify right side
    7,857.36x = 27,235,712.55
  5. Step 5: Solve for x
    x = 27,235,712.55/7,857.36
  6. Step 6: Final answer
    x = 3,466.27

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