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Finding the Fourth Proportional to 551,337,770.72, 827,003,659.62 and 318,017,238.32

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Solution

The fourth proportional to 551,337,770.72, 827,003,659.62 and 318,017,238.32 is: 477,024,129.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,337,770.72 : 827,003,659.62 = 318,017,238.32 : x
  2. Step 2: Convert to fraction form
    551,337,770.72/827,003,659.62 = 318,017,238.32/x
  3. Step 3: Cross multiply
    551,337,770.72x = 827,003,659.62 × 318,017,238.32
  4. Step 4: Simplify right side
    551,337,770.72x = 263,001,419,912,885,696
  5. Step 5: Solve for x
    x = 263,001,419,912,885,696/551,337,770.72
  6. Step 6: Final answer
    x = 477,024,129.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.