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Finding the Fourth Proportional to 1,996.24, 2,993.88 and 698

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Solution

The fourth proportional to 1,996.24, 2,993.88 and 698 is: 1,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.24 : 2,993.88 = 698 : x
  2. Step 2: Convert to fraction form
    1,996.24/2,993.88 = 698/x
  3. Step 3: Cross multiply
    1,996.24x = 2,993.88 × 698
  4. Step 4: Simplify right side
    1,996.24x = 2,089,728.24
  5. Step 5: Solve for x
    x = 2,089,728.24/1,996.24
  6. Step 6: Final answer
    x = 1,046.83

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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.