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Finding the Third Proportional to 319,576,531 and 687,691,341

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Solution

The third proportional to 319,576,531 and 687,691,341 is: 1,479,831,385.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,576,531 : 687,691,341 = 687,691,341 : x
  2. Step 2: Convert to fraction form
    319,576,531/687,691,341 = 687,691,341/x
  3. Step 3: Cross multiply
    319,576,531x = 687,691,341 × 687,691,341
  4. Step 4: Simplify right side
    319,576,531x = 472,919,380,486,378,304
  5. Step 5: Solve for x
    x = 472,919,380,486,378,304/319,576,531
  6. Step 6: Final answer
    x = 1,479,831,385.01

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These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.