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Finding the Third Proportional to 393,838 and 863,917

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Solution

The third proportional to 393,838 and 863,917 is: 1,895,075.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,838 : 863,917 = 863,917 : x
  2. Step 2: Convert to fraction form
    393,838/863,917 = 863,917/x
  3. Step 3: Cross multiply
    393,838x = 863,917 × 863,917
  4. Step 4: Simplify right side
    393,838x = 746,352,582,889
  5. Step 5: Solve for x
    x = 746,352,582,889/393,838
  6. Step 6: Final answer
    x = 1,895,075.09

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.