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Finding the Third Proportional to 205,959,198 and 310,854,105

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Solution

The third proportional to 205,959,198 and 310,854,105 is: 469,171,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,959,198 : 310,854,105 = 310,854,105 : x
  2. Step 2: Convert to fraction form
    205,959,198/310,854,105 = 310,854,105/x
  3. Step 3: Cross multiply
    205,959,198x = 310,854,105 × 310,854,105
  4. Step 4: Simplify right side
    205,959,198x = 96,630,274,595,351,024
  5. Step 5: Solve for x
    x = 96,630,274,595,351,024/205,959,198
  6. Step 6: Final answer
    x = 469,171,930.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.