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Finding the Fourth Proportional to 7,807.48, 11,700.66 and 3,914.68

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Solution

The fourth proportional to 7,807.48, 11,700.66 and 3,914.68 is: 5,866.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.48 : 11,700.66 = 3,914.68 : x
  2. Step 2: Convert to fraction form
    7,807.48/11,700.66 = 3,914.68/x
  3. Step 3: Cross multiply
    7,807.48x = 11,700.66 × 3,914.68
  4. Step 4: Simplify right side
    7,807.48x = 45,804,339.69
  5. Step 5: Solve for x
    x = 45,804,339.69/7,807.48
  6. Step 6: Final answer
    x = 5,866.73

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