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Finding the Third Proportional to 3,290 and 4,442

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Solution

The third proportional to 3,290 and 4,442 is: 5,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290 : 4,442 = 4,442 : x
  2. Step 2: Convert to fraction form
    3,290/4,442 = 4,442/x
  3. Step 3: Cross multiply
    3,290x = 4,442 × 4,442
  4. Step 4: Simplify right side
    3,290x = 19,731,364
  5. Step 5: Solve for x
    x = 19,731,364/3,290
  6. Step 6: Final answer
    x = 5,997.38

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.