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Finding the Third Proportional to 42,561,622 and 66,038,074

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Solution

The third proportional to 42,561,622 and 66,038,074 is: 102,463,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,561,622 : 66,038,074 = 66,038,074 : x
  2. Step 2: Convert to fraction form
    42,561,622/66,038,074 = 66,038,074/x
  3. Step 3: Cross multiply
    42,561,622x = 66,038,074 × 66,038,074
  4. Step 4: Simplify right side
    42,561,622x = 4,361,027,217,629,476
  5. Step 5: Solve for x
    x = 4,361,027,217,629,476/42,561,622
  6. Step 6: Final answer
    x = 102,463,839.79

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.