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Finding the Fourth Proportional to 5,191.98, 7,786.80 and 1,493.38

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Solution

The fourth proportional to 5,191.98, 7,786.80 and 1,493.38 is: 2,239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.98 : 7,786.80 = 1,493.38 : x
  2. Step 2: Convert to fraction form
    5,191.98/7,786.80 = 1,493.38/x
  3. Step 3: Cross multiply
    5,191.98x = 7,786.80 × 1,493.38
  4. Step 4: Simplify right side
    5,191.98x = 11,628,643.92
  5. Step 5: Solve for x
    x = 11,628,643.92/5,191.98
  6. Step 6: Final answer
    x = 2,239.73

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