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Finding the Fourth Proportional to 3,917.87, 5,876.77 and 996.17

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Solution

The fourth proportional to 3,917.87, 5,876.77 and 996.17 is: 1,494.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.87 : 5,876.77 = 996.17 : x
  2. Step 2: Convert to fraction form
    3,917.87/5,876.77 = 996.17/x
  3. Step 3: Cross multiply
    3,917.87x = 5,876.77 × 996.17
  4. Step 4: Simplify right side
    3,917.87x = 5,854,231.96
  5. Step 5: Solve for x
    x = 5,854,231.96/3,917.87
  6. Step 6: Final answer
    x = 1,494.24

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1.5x scale

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.