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Finding the Third Proportional to 3,298.50 and 7,209

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Solution

The third proportional to 3,298.50 and 7,209 is: 15,755.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,298.50 : 7,209 = 7,209 : x
  2. Step 2: Convert to fraction form
    3,298.50/7,209 = 7,209/x
  3. Step 3: Cross multiply
    3,298.50x = 7,209 × 7,209
  4. Step 4: Simplify right side
    3,298.50x = 51,969,681
  5. Step 5: Solve for x
    x = 51,969,681/3,298.50
  6. Step 6: Final answer
    x = 15,755.55

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.