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Finding the Fourth Proportional to 3,910.66, 5,865.99 and 3,651.46

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Solution

The fourth proportional to 3,910.66, 5,865.99 and 3,651.46 is: 5,477.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.66 : 5,865.99 = 3,651.46 : x
  2. Step 2: Convert to fraction form
    3,910.66/5,865.99 = 3,651.46/x
  3. Step 3: Cross multiply
    3,910.66x = 5,865.99 × 3,651.46
  4. Step 4: Simplify right side
    3,910.66x = 21,419,427.85
  5. Step 5: Solve for x
    x = 21,419,427.85/3,910.66
  6. Step 6: Final answer
    x = 5,477.19

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Similar ratio
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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.