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Finding the Third Proportional to 31,976,209.69 and 70,328,251.69

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Solution

The third proportional to 31,976,209.69 and 70,328,251.69 is: 154,679,464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,976,209.69 : 70,328,251.69 = 70,328,251.69 : x
  2. Step 2: Convert to fraction form
    31,976,209.69/70,328,251.69 = 70,328,251.69/x
  3. Step 3: Cross multiply
    31,976,209.69x = 70,328,251.69 × 70,328,251.69
  4. Step 4: Simplify right side
    31,976,209.69x = 4,946,062,985,420,347
  5. Step 5: Solve for x
    x = 4,946,062,985,420,347/31,976,209.69
  6. Step 6: Final answer
    x = 154,679,464.32

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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.