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Finding the Fourth Proportional to 668,991.39, 923,208.60 and 363,067.70

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Solution

The fourth proportional to 668,991.39, 923,208.60 and 363,067.70 is: 501,033.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,991.39 : 923,208.60 = 363,067.70 : x
  2. Step 2: Convert to fraction form
    668,991.39/923,208.60 = 363,067.70/x
  3. Step 3: Cross multiply
    668,991.39x = 923,208.60 × 363,067.70
  4. Step 4: Simplify right side
    668,991.39x = 335,187,218,406.18
  5. Step 5: Solve for x
    x = 335,187,218,406.18/668,991.39
  6. Step 6: Final answer
    x = 501,033.68

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1.5x scale

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.