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Finding the Third Proportional to 764 and 1,994

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Solution

The third proportional to 764 and 1,994 is: 5,204.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    764 : 1,994 = 1,994 : x
  2. Step 2: Convert to fraction form
    764/1,994 = 1,994/x
  3. Step 3: Cross multiply
    764x = 1,994 × 1,994
  4. Step 4: Simplify right side
    764x = 3,976,036
  5. Step 5: Solve for x
    x = 3,976,036/764
  6. Step 6: Final answer
    x = 5,204.24

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Why These Related Problems?

These problems maintain the same ratio (2.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.