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Finding the Fourth Proportional to 5,778.89, 7,974.79 and 3,226.69

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Solution

The fourth proportional to 5,778.89, 7,974.79 and 3,226.69 is: 4,452.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778.89 : 7,974.79 = 3,226.69 : x
  2. Step 2: Convert to fraction form
    5,778.89/7,974.79 = 3,226.69/x
  3. Step 3: Cross multiply
    5,778.89x = 7,974.79 × 3,226.69
  4. Step 4: Simplify right side
    5,778.89x = 25,732,132.19
  5. Step 5: Solve for x
    x = 25,732,132.19/5,778.89
  6. Step 6: Final answer
    x = 4,452.78

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1.5x scale

Why These Related Problems?

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