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Finding the Third Proportional to 3,318.50 and 4,902

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Solution

The third proportional to 3,318.50 and 4,902 is: 7,241.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.50 : 4,902 = 4,902 : x
  2. Step 2: Convert to fraction form
    3,318.50/4,902 = 4,902/x
  3. Step 3: Cross multiply
    3,318.50x = 4,902 × 4,902
  4. Step 4: Simplify right side
    3,318.50x = 24,029,604
  5. Step 5: Solve for x
    x = 24,029,604/3,318.50
  6. Step 6: Final answer
    x = 7,241.10

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.