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Finding the Fourth Proportional to 1,331,891, 1,997,838.42 and 543,923

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Solution

The fourth proportional to 1,331,891, 1,997,838.42 and 543,923 is: 815,885.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,891 : 1,997,838.42 = 543,923 : x
  2. Step 2: Convert to fraction form
    1,331,891/1,997,838.42 = 543,923/x
  3. Step 3: Cross multiply
    1,331,891x = 1,997,838.42 × 543,923
  4. Step 4: Simplify right side
    1,331,891x = 1,086,670,266,921.66
  5. Step 5: Solve for x
    x = 1,086,670,266,921.66/1,331,891
  6. Step 6: Final answer
    x = 815,885.28

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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.