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Finding the Third Proportional to 166,388,986 and 259,656,372

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Solution

The third proportional to 166,388,986 and 259,656,372 is: 405,203,692.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,388,986 : 259,656,372 = 259,656,372 : x
  2. Step 2: Convert to fraction form
    166,388,986/259,656,372 = 259,656,372/x
  3. Step 3: Cross multiply
    166,388,986x = 259,656,372 × 259,656,372
  4. Step 4: Simplify right side
    166,388,986x = 67,421,431,520,202,384
  5. Step 5: Solve for x
    x = 67,421,431,520,202,384/166,388,986
  6. Step 6: Final answer
    x = 405,203,692.51

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.