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Finding the Fourth Proportional to 1,998.52, 2,757.98 and 1,114.40

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Solution

The fourth proportional to 1,998.52, 2,757.98 and 1,114.40 is: 1,537.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.52 : 2,757.98 = 1,114.40 : x
  2. Step 2: Convert to fraction form
    1,998.52/2,757.98 = 1,114.40/x
  3. Step 3: Cross multiply
    1,998.52x = 2,757.98 × 1,114.40
  4. Step 4: Simplify right side
    1,998.52x = 3,073,487.34
  5. Step 5: Solve for x
    x = 3,073,487.34/1,998.52
  6. Step 6: Final answer
    x = 1,537.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.