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Finding the Third Proportional to 87,647,570 and 136,255,719

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Solution

The third proportional to 87,647,570 and 136,255,719 is: 211,821,285.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,647,570 : 136,255,719 = 136,255,719 : x
  2. Step 2: Convert to fraction form
    87,647,570/136,255,719 = 136,255,719/x
  3. Step 3: Cross multiply
    87,647,570x = 136,255,719 × 136,255,719
  4. Step 4: Simplify right side
    87,647,570x = 18,565,620,960,206,960
  5. Step 5: Solve for x
    x = 18,565,620,960,206,960/87,647,570
  6. Step 6: Final answer
    x = 211,821,285.64

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.