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Finding the Fourth Proportional to 2,217.32, 3,326.49 and 756.48

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Solution

The fourth proportional to 2,217.32, 3,326.49 and 756.48 is: 1,134.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.32 : 3,326.49 = 756.48 : x
  2. Step 2: Convert to fraction form
    2,217.32/3,326.49 = 756.48/x
  3. Step 3: Cross multiply
    2,217.32x = 3,326.49 × 756.48
  4. Step 4: Simplify right side
    2,217.32x = 2,516,423.16
  5. Step 5: Solve for x
    x = 2,516,423.16/2,217.32
  6. Step 6: Final answer
    x = 1,134.90

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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.