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Finding the Third Proportional to 619,380 and 917,556.75

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Solution

The third proportional to 619,380 and 917,556.75 is: 1,359,279.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,380 : 917,556.75 = 917,556.75 : x
  2. Step 2: Convert to fraction form
    619,380/917,556.75 = 917,556.75/x
  3. Step 3: Cross multiply
    619,380x = 917,556.75 × 917,556.75
  4. Step 4: Simplify right side
    619,380x = 841,910,389,470.56
  5. Step 5: Solve for x
    x = 841,910,389,470.56/619,380
  6. Step 6: Final answer
    x = 1,359,279.26

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.