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Finding the Third Proportional to 209,885,628 and 461,092,920

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Solution

The third proportional to 209,885,628 and 461,092,920 is: 1,012,964,455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,885,628 : 461,092,920 = 461,092,920 : x
  2. Step 2: Convert to fraction form
    209,885,628/461,092,920 = 461,092,920/x
  3. Step 3: Cross multiply
    209,885,628x = 461,092,920 × 461,092,920
  4. Step 4: Simplify right side
    209,885,628x = 212,606,680,874,126,400
  5. Step 5: Solve for x
    x = 212,606,680,874,126,400/209,885,628
  6. Step 6: Final answer
    x = 1,012,964,455.45

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.