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Finding the Third Proportional to 868,190 and 1,860,980

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Solution

The third proportional to 868,190 and 1,860,980 is: 3,989,042.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,190 : 1,860,980 = 1,860,980 : x
  2. Step 2: Convert to fraction form
    868,190/1,860,980 = 1,860,980/x
  3. Step 3: Cross multiply
    868,190x = 1,860,980 × 1,860,980
  4. Step 4: Simplify right side
    868,190x = 3,463,246,560,400
  5. Step 5: Solve for x
    x = 3,463,246,560,400/868,190
  6. Step 6: Final answer
    x = 3,989,042.21

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.