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Finding the Third Proportional to 475.88 and 789.94

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Solution

The third proportional to 475.88 and 789.94 is: 1,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.88 : 789.94 = 789.94 : x
  2. Step 2: Convert to fraction form
    475.88/789.94 = 789.94/x
  3. Step 3: Cross multiply
    475.88x = 789.94 × 789.94
  4. Step 4: Simplify right side
    475.88x = 624,001.25
  5. Step 5: Solve for x
    x = 624,001.25/475.88
  6. Step 6: Final answer
    x = 1,311.27

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.