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Finding the Third Proportional to 416.25 and 711

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Solution

The third proportional to 416.25 and 711 is: 1,214.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.25 : 711 = 711 : x
  2. Step 2: Convert to fraction form
    416.25/711 = 711/x
  3. Step 3: Cross multiply
    416.25x = 711 × 711
  4. Step 4: Simplify right side
    416.25x = 505,521
  5. Step 5: Solve for x
    x = 505,521/416.25
  6. Step 6: Final answer
    x = 1,214.46

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.