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Finding the Third Proportional to 2,213.50 and 3,455

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Solution

The third proportional to 2,213.50 and 3,455 is: 5,392.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.50 : 3,455 = 3,455 : x
  2. Step 2: Convert to fraction form
    2,213.50/3,455 = 3,455/x
  3. Step 3: Cross multiply
    2,213.50x = 3,455 × 3,455
  4. Step 4: Simplify right side
    2,213.50x = 11,937,025
  5. Step 5: Solve for x
    x = 11,937,025/2,213.50
  6. Step 6: Final answer
    x = 5,392.83

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.