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Finding the Third Proportional to 561,912 and 1,217,136

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Solution

The third proportional to 561,912 and 1,217,136 is: 2,636,391.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,912 : 1,217,136 = 1,217,136 : x
  2. Step 2: Convert to fraction form
    561,912/1,217,136 = 1,217,136/x
  3. Step 3: Cross multiply
    561,912x = 1,217,136 × 1,217,136
  4. Step 4: Simplify right side
    561,912x = 1,481,420,042,496
  5. Step 5: Solve for x
    x = 1,481,420,042,496/561,912
  6. Step 6: Final answer
    x = 2,636,391.54

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.