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Finding the Third Proportional to 696 and 1,770

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Solution

The third proportional to 696 and 1,770 is: 4,501.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    696 : 1,770 = 1,770 : x
  2. Step 2: Convert to fraction form
    696/1,770 = 1,770/x
  3. Step 3: Cross multiply
    696x = 1,770 × 1,770
  4. Step 4: Simplify right side
    696x = 3,132,900
  5. Step 5: Solve for x
    x = 3,132,900/696
  6. Step 6: Final answer
    x = 4,501.29

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Why These Related Problems?

These problems maintain the same ratio (2.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.