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Finding the Fourth Proportional to 2,766.98, 4,149.80 and 792.54

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Solution

The fourth proportional to 2,766.98, 4,149.80 and 792.54 is: 1,188.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.98 : 4,149.80 = 792.54 : x
  2. Step 2: Convert to fraction form
    2,766.98/4,149.80 = 792.54/x
  3. Step 3: Cross multiply
    2,766.98x = 4,149.80 × 792.54
  4. Step 4: Simplify right side
    2,766.98x = 3,288,884.47
  5. Step 5: Solve for x
    x = 3,288,884.47/2,766.98
  6. Step 6: Final answer
    x = 1,188.62

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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.