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Finding the Third Proportional to 64,639,270.69 and 90,701,694

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Solution

The third proportional to 64,639,270.69 and 90,701,694 is: 127,272,433.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,639,270.69 : 90,701,694 = 90,701,694 : x
  2. Step 2: Convert to fraction form
    64,639,270.69/90,701,694 = 90,701,694/x
  3. Step 3: Cross multiply
    64,639,270.69x = 90,701,694 × 90,701,694
  4. Step 4: Simplify right side
    64,639,270.69x = 8,226,797,294,469,636
  5. Step 5: Solve for x
    x = 8,226,797,294,469,636/64,639,270.69
  6. Step 6: Final answer
    x = 127,272,433.72

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.