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Finding the Fourth Proportional to 1,331,888, 1,997,833.92 and 543,920

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Solution

The fourth proportional to 1,331,888, 1,997,833.92 and 543,920 is: 815,880.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,888 : 1,997,833.92 = 543,920 : x
  2. Step 2: Convert to fraction form
    1,331,888/1,997,833.92 = 543,920/x
  3. Step 3: Cross multiply
    1,331,888x = 1,997,833.92 × 543,920
  4. Step 4: Simplify right side
    1,331,888x = 1,086,661,825,766.40
  5. Step 5: Solve for x
    x = 1,086,661,825,766.40/1,331,888
  6. Step 6: Final answer
    x = 815,880.78

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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.