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Finding the Third Proportional to 905,422 and 1,918,777

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Solution

The third proportional to 905,422 and 1,918,777 is: 4,066,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,422 : 1,918,777 = 1,918,777 : x
  2. Step 2: Convert to fraction form
    905,422/1,918,777 = 1,918,777/x
  3. Step 3: Cross multiply
    905,422x = 1,918,777 × 1,918,777
  4. Step 4: Simplify right side
    905,422x = 3,681,705,175,729
  5. Step 5: Solve for x
    x = 3,681,705,175,729/905,422
  6. Step 6: Final answer
    x = 4,066,286.41

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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.