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Finding the Third Proportional to 418,927,891 and 888,921,220

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Solution

The third proportional to 418,927,891 and 888,921,220 is: 1,886,197,964.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,927,891 : 888,921,220 = 888,921,220 : x
  2. Step 2: Convert to fraction form
    418,927,891/888,921,220 = 888,921,220/x
  3. Step 3: Cross multiply
    418,927,891x = 888,921,220 × 888,921,220
  4. Step 4: Simplify right side
    418,927,891x = 790,180,935,366,288,384
  5. Step 5: Solve for x
    x = 790,180,935,366,288,384/418,927,891
  6. Step 6: Final answer
    x = 1,886,197,964.71

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.