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Finding the Third Proportional to 416.25 and 906.75

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Solution

The third proportional to 416.25 and 906.75 is: 1,975.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.25 : 906.75 = 906.75 : x
  2. Step 2: Convert to fraction form
    416.25/906.75 = 906.75/x
  3. Step 3: Cross multiply
    416.25x = 906.75 × 906.75
  4. Step 4: Simplify right side
    416.25x = 822,195.56
  5. Step 5: Solve for x
    x = 822,195.56/416.25
  6. Step 6: Final answer
    x = 1,975.24

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.