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Finding the Third Proportional to 18,699,633,789,871 and 40,213,498,163,882

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Solution

The third proportional to 18,699,633,789,871 and 40,213,498,163,882 is: 86,478,989,521,842.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699,633,789,871 : 40,213,498,163,882 = 40,213,498,163,882 : x
  2. Step 2: Convert to fraction form
    18,699,633,789,871/40,213,498,163,882 = 40,213,498,163,882/x
  3. Step 3: Cross multiply
    18,699,633,789,871x = 40,213,498,163,882 × 40,213,498,163,882
  4. Step 4: Simplify right side
    18,699,633,789,871x = 1,617,125,434,576,540,855,915,511,808
  5. Step 5: Solve for x
    x = 1,617,125,434,576,540,855,915,511,808/18,699,633,789,871
  6. Step 6: Final answer
    x = 86,478,989,521,842.22

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.