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Finding the Fourth Proportional to 1,149.73, 1,721.80 and 1,092.31

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Solution

The fourth proportional to 1,149.73, 1,721.80 and 1,092.31 is: 1,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.73 : 1,721.80 = 1,092.31 : x
  2. Step 2: Convert to fraction form
    1,149.73/1,721.80 = 1,092.31/x
  3. Step 3: Cross multiply
    1,149.73x = 1,721.80 × 1,092.31
  4. Step 4: Simplify right side
    1,149.73x = 1,880,739.36
  5. Step 5: Solve for x
    x = 1,880,739.36/1,149.73
  6. Step 6: Final answer
    x = 1,635.81

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