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Finding the Third Proportional to 515,954 and 781,722

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Solution

The third proportional to 515,954 and 781,722 is: 1,184,387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,954 : 781,722 = 781,722 : x
  2. Step 2: Convert to fraction form
    515,954/781,722 = 781,722/x
  3. Step 3: Cross multiply
    515,954x = 781,722 × 781,722
  4. Step 4: Simplify right side
    515,954x = 611,089,285,284
  5. Step 5: Solve for x
    x = 611,089,285,284/515,954
  6. Step 6: Final answer
    x = 1,184,387.15

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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.