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Finding the Third Proportional to 764 and 1,546

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Solution

The third proportional to 764 and 1,546 is: 3,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    764 : 1,546 = 1,546 : x
  2. Step 2: Convert to fraction form
    764/1,546 = 1,546/x
  3. Step 3: Cross multiply
    764x = 1,546 × 1,546
  4. Step 4: Simplify right side
    764x = 2,390,116
  5. Step 5: Solve for x
    x = 2,390,116/764
  6. Step 6: Final answer
    x = 3,128.42

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.