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Finding the Third Proportional to 1,815,939,000 and 3,910,387,212

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Solution

The third proportional to 1,815,939,000 and 3,910,387,212 is: 8,420,507,598.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815,939,000 : 3,910,387,212 = 3,910,387,212 : x
  2. Step 2: Convert to fraction form
    1,815,939,000/3,910,387,212 = 3,910,387,212/x
  3. Step 3: Cross multiply
    1,815,939,000x = 3,910,387,212 × 3,910,387,212
  4. Step 4: Simplify right side
    1,815,939,000x = 15,291,128,147,773,132,800
  5. Step 5: Solve for x
    x = 15,291,128,147,773,132,800/1,815,939,000
  6. Step 6: Final answer
    x = 8,420,507,598.42

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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.