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Finding the Third Proportional to 3,324 and 5,290

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Solution

The third proportional to 3,324 and 5,290 is: 8,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,324 : 5,290 = 5,290 : x
  2. Step 2: Convert to fraction form
    3,324/5,290 = 5,290/x
  3. Step 3: Cross multiply
    3,324x = 5,290 × 5,290
  4. Step 4: Simplify right side
    3,324x = 27,984,100
  5. Step 5: Solve for x
    x = 27,984,100/3,324
  6. Step 6: Final answer
    x = 8,418.80

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.