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Finding the Third Proportional to 471.75 and 654.75

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Solution

The third proportional to 471.75 and 654.75 is: 908.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.75 : 654.75 = 654.75 : x
  2. Step 2: Convert to fraction form
    471.75/654.75 = 654.75/x
  3. Step 3: Cross multiply
    471.75x = 654.75 × 654.75
  4. Step 4: Simplify right side
    471.75x = 428,697.56
  5. Step 5: Solve for x
    x = 428,697.56/471.75
  6. Step 6: Final answer
    x = 908.74

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.