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Finding the Third Proportional to 822.50 and 1,696

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Solution

The third proportional to 822.50 and 1,696 is: 3,497.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.50 : 1,696 = 1,696 : x
  2. Step 2: Convert to fraction form
    822.50/1,696 = 1,696/x
  3. Step 3: Cross multiply
    822.50x = 1,696 × 1,696
  4. Step 4: Simplify right side
    822.50x = 2,876,416
  5. Step 5: Solve for x
    x = 2,876,416/822.50
  6. Step 6: Final answer
    x = 3,497.16

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.