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Finding the Third Proportional to 392,317.25 and 831,713.75

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Solution

The third proportional to 392,317.25 and 831,713.75 is: 1,763,235.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,317.25 : 831,713.75 = 831,713.75 : x
  2. Step 2: Convert to fraction form
    392,317.25/831,713.75 = 831,713.75/x
  3. Step 3: Cross multiply
    392,317.25x = 831,713.75 × 831,713.75
  4. Step 4: Simplify right side
    392,317.25x = 691,747,761,939.06
  5. Step 5: Solve for x
    x = 691,747,761,939.06/392,317.25
  6. Step 6: Final answer
    x = 1,763,235.65

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.