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Finding the Third Proportional to 290,906,136 and 627,958,836

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Solution

The third proportional to 290,906,136 and 627,958,836 is: 1,355,531,049.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,906,136 : 627,958,836 = 627,958,836 : x
  2. Step 2: Convert to fraction form
    290,906,136/627,958,836 = 627,958,836/x
  3. Step 3: Cross multiply
    290,906,136x = 627,958,836 × 627,958,836
  4. Step 4: Simplify right side
    290,906,136x = 394,332,299,710,474,880
  5. Step 5: Solve for x
    x = 394,332,299,710,474,880/290,906,136
  6. Step 6: Final answer
    x = 1,355,531,049.06

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.