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Finding the Third Proportional to 205,959,155 and 310,854,042

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Solution

The third proportional to 205,959,155 and 310,854,042 is: 469,171,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,959,155 : 310,854,042 = 310,854,042 : x
  2. Step 2: Convert to fraction form
    205,959,155/310,854,042 = 310,854,042/x
  3. Step 3: Cross multiply
    205,959,155x = 310,854,042 × 310,854,042
  4. Step 4: Simplify right side
    205,959,155x = 96,630,235,427,737,760
  5. Step 5: Solve for x
    x = 96,630,235,427,737,760/205,959,155
  6. Step 6: Final answer
    x = 469,171,838.60

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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.