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Finding the Fourth Proportional to 1,331,924, 1,997,887.92 and 543,956

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Solution

The fourth proportional to 1,331,924, 1,997,887.92 and 543,956 is: 815,934.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,924 : 1,997,887.92 = 543,956 : x
  2. Step 2: Convert to fraction form
    1,331,924/1,997,887.92 = 543,956/x
  3. Step 3: Cross multiply
    1,331,924x = 1,997,887.92 × 543,956
  4. Step 4: Simplify right side
    1,331,924x = 1,086,763,121,411.52
  5. Step 5: Solve for x
    x = 1,086,763,121,411.52/1,331,924
  6. Step 6: Final answer
    x = 815,934.78

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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.