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Finding the Fourth Proportional to 2,282.36, 3,422.82 and 743

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Solution

The fourth proportional to 2,282.36, 3,422.82 and 743 is: 1,114.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,282.36 : 3,422.82 = 743 : x
  2. Step 2: Convert to fraction form
    2,282.36/3,422.82 = 743/x
  3. Step 3: Cross multiply
    2,282.36x = 3,422.82 × 743
  4. Step 4: Simplify right side
    2,282.36x = 2,543,155.26
  5. Step 5: Solve for x
    x = 2,543,155.26/2,282.36
  6. Step 6: Final answer
    x = 1,114.27

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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.