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Finding the Fourth Proportional to 2,216.62, 3,324.66 and 755.92

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Solution

The fourth proportional to 2,216.62, 3,324.66 and 755.92 is: 1,133.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.62 : 3,324.66 = 755.92 : x
  2. Step 2: Convert to fraction form
    2,216.62/3,324.66 = 755.92/x
  3. Step 3: Cross multiply
    2,216.62x = 3,324.66 × 755.92
  4. Step 4: Simplify right side
    2,216.62x = 2,513,176.99
  5. Step 5: Solve for x
    x = 2,513,176.99/2,216.62
  6. Step 6: Final answer
    x = 1,133.79

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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.