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Finding the Fourth Proportional to 3,901,839.92, 5,853,320.70 and 1,206,375.32

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Solution

The fourth proportional to 3,901,839.92, 5,853,320.70 and 1,206,375.32 is: 1,809,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901,839.92 : 5,853,320.70 = 1,206,375.32 : x
  2. Step 2: Convert to fraction form
    3,901,839.92/5,853,320.70 = 1,206,375.32/x
  3. Step 3: Cross multiply
    3,901,839.92x = 5,853,320.70 × 1,206,375.32
  4. Step 4: Simplify right side
    3,901,839.92x = 7,061,301,632,525.13
  5. Step 5: Solve for x
    x = 7,061,301,632,525.13/3,901,839.92
  6. Step 6: Final answer
    x = 1,809,736.37

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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.