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Finding the Third Proportional to 517,512 and 785,604

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Solution

The third proportional to 517,512 and 785,604 is: 1,192,578.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,512 : 785,604 = 785,604 : x
  2. Step 2: Convert to fraction form
    517,512/785,604 = 785,604/x
  3. Step 3: Cross multiply
    517,512x = 785,604 × 785,604
  4. Step 4: Simplify right side
    517,512x = 617,173,644,816
  5. Step 5: Solve for x
    x = 617,173,644,816/517,512
  6. Step 6: Final answer
    x = 1,192,578.42

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.