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Finding the Fourth Proportional to 3,912.01, 5,866.92 and 1,963.69

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Solution

The fourth proportional to 3,912.01, 5,866.92 and 1,963.69 is: 2,944.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.01 : 5,866.92 = 1,963.69 : x
  2. Step 2: Convert to fraction form
    3,912.01/5,866.92 = 1,963.69/x
  3. Step 3: Cross multiply
    3,912.01x = 5,866.92 × 1,963.69
  4. Step 4: Simplify right side
    3,912.01x = 11,520,812.13
  5. Step 5: Solve for x
    x = 11,520,812.13/3,912.01
  6. Step 6: Final answer
    x = 2,944.99

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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.