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Finding the Third Proportional to 18,892,170 and 39,128,562

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Solution

The third proportional to 18,892,170 and 39,128,562 is: 81,041,212.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892,170 : 39,128,562 = 39,128,562 : x
  2. Step 2: Convert to fraction form
    18,892,170/39,128,562 = 39,128,562/x
  3. Step 3: Cross multiply
    18,892,170x = 39,128,562 × 39,128,562
  4. Step 4: Simplify right side
    18,892,170x = 1,531,044,364,187,844
  5. Step 5: Solve for x
    x = 1,531,044,364,187,844/18,892,170
  6. Step 6: Final answer
    x = 81,041,212.53

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.