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Finding the Fourth Proportional to 1,362.56, 2,044.56 and 998

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Solution

The fourth proportional to 1,362.56, 2,044.56 and 998 is: 1,497.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.56 : 2,044.56 = 998 : x
  2. Step 2: Convert to fraction form
    1,362.56/2,044.56 = 998/x
  3. Step 3: Cross multiply
    1,362.56x = 2,044.56 × 998
  4. Step 4: Simplify right side
    1,362.56x = 2,040,470.88
  5. Step 5: Solve for x
    x = 2,040,470.88/1,362.56
  6. Step 6: Final answer
    x = 1,497.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.