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Finding the Third Proportional to 292,279,478 and 636,011,908

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Solution

The third proportional to 292,279,478 and 636,011,908 is: 1,383,987,510.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,279,478 : 636,011,908 = 636,011,908 : x
  2. Step 2: Convert to fraction form
    292,279,478/636,011,908 = 636,011,908/x
  3. Step 3: Cross multiply
    292,279,478x = 636,011,908 × 636,011,908
  4. Step 4: Simplify right side
    292,279,478x = 404,511,147,117,800,448
  5. Step 5: Solve for x
    x = 404,511,147,117,800,448/292,279,478
  6. Step 6: Final answer
    x = 1,383,987,510.47

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.