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Finding the Fourth Proportional to 666,198, 919,367.82 and 364,392

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Solution

The fourth proportional to 666,198, 919,367.82 and 364,392 is: 502,868.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,198 : 919,367.82 = 364,392 : x
  2. Step 2: Convert to fraction form
    666,198/919,367.82 = 364,392/x
  3. Step 3: Cross multiply
    666,198x = 919,367.82 × 364,392
  4. Step 4: Simplify right side
    666,198x = 335,010,278,665.44
  5. Step 5: Solve for x
    x = 335,010,278,665.44/666,198
  6. Step 6: Final answer
    x = 502,868.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.