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Finding the Third Proportional to 616.50 and 1,323

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Solution

The third proportional to 616.50 and 1,323 is: 2,839.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.50 : 1,323 = 1,323 : x
  2. Step 2: Convert to fraction form
    616.50/1,323 = 1,323/x
  3. Step 3: Cross multiply
    616.50x = 1,323 × 1,323
  4. Step 4: Simplify right side
    616.50x = 1,750,329
  5. Step 5: Solve for x
    x = 1,750,329/616.50
  6. Step 6: Final answer
    x = 2,839.14

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.