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Finding the Third Proportional to 764.44 and 906.75

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Solution

The third proportional to 764.44 and 906.75 is: 1,075.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    764.44 : 906.75 = 906.75 : x
  2. Step 2: Convert to fraction form
    764.44/906.75 = 906.75/x
  3. Step 3: Cross multiply
    764.44x = 906.75 × 906.75
  4. Step 4: Simplify right side
    764.44x = 822,195.56
  5. Step 5: Solve for x
    x = 822,195.56/764.44
  6. Step 6: Final answer
    x = 1,075.56

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Why These Related Problems?

These problems maintain the same ratio (1.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.