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Finding the Third Proportional to 1,696 and 2,756

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Solution

The third proportional to 1,696 and 2,756 is: 4,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,696 : 2,756 = 2,756 : x
  2. Step 2: Convert to fraction form
    1,696/2,756 = 2,756/x
  3. Step 3: Cross multiply
    1,696x = 2,756 × 2,756
  4. Step 4: Simplify right side
    1,696x = 7,595,536
  5. Step 5: Solve for x
    x = 7,595,536/1,696
  6. Step 6: Final answer
    x = 4,478.50

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.