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Finding the Third Proportional to 37,889,930 and 55,396,403

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Solution

The third proportional to 37,889,930 and 55,396,403 is: 80,991,478.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,889,930 : 55,396,403 = 55,396,403 : x
  2. Step 2: Convert to fraction form
    37,889,930/55,396,403 = 55,396,403/x
  3. Step 3: Cross multiply
    37,889,930x = 55,396,403 × 55,396,403
  4. Step 4: Simplify right side
    37,889,930x = 3,068,761,465,338,409
  5. Step 5: Solve for x
    x = 3,068,761,465,338,409/37,889,930
  6. Step 6: Final answer
    x = 80,991,478.88

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.