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Finding the Third Proportional to 256,801 and 618,657

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Solution

The third proportional to 256,801 and 618,657 is: 1,490,401.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,801 : 618,657 = 618,657 : x
  2. Step 2: Convert to fraction form
    256,801/618,657 = 618,657/x
  3. Step 3: Cross multiply
    256,801x = 618,657 × 618,657
  4. Step 4: Simplify right side
    256,801x = 382,736,483,649
  5. Step 5: Solve for x
    x = 382,736,483,649/256,801
  6. Step 6: Final answer
    x = 1,490,401.06

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.