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Finding the Third Proportional to 86,575,378 and 190,465,621

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Solution

The third proportional to 86,575,378 and 190,465,621 is: 419,023,902.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,575,378 : 190,465,621 = 190,465,621 : x
  2. Step 2: Convert to fraction form
    86,575,378/190,465,621 = 190,465,621/x
  3. Step 3: Cross multiply
    86,575,378x = 190,465,621 × 190,465,621
  4. Step 4: Simplify right side
    86,575,378x = 36,277,152,782,915,640
  5. Step 5: Solve for x
    x = 36,277,152,782,915,640/86,575,378
  6. Step 6: Final answer
    x = 419,023,902.88

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.