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Finding the Fourth Proportional to 2,092.40, 3,134.34 and 993.44

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Solution

The fourth proportional to 2,092.40, 3,134.34 and 993.44 is: 1,488.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.40 : 3,134.34 = 993.44 : x
  2. Step 2: Convert to fraction form
    2,092.40/3,134.34 = 993.44/x
  3. Step 3: Cross multiply
    2,092.40x = 3,134.34 × 993.44
  4. Step 4: Simplify right side
    2,092.40x = 3,113,778.73
  5. Step 5: Solve for x
    x = 3,113,778.73/2,092.40
  6. Step 6: Final answer
    x = 1,488.14

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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.