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Finding the Fourth Proportional to 403,922.70, 605,884.05 and 325,190.70

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Solution

The fourth proportional to 403,922.70, 605,884.05 and 325,190.70 is: 487,786.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,922.70 : 605,884.05 = 325,190.70 : x
  2. Step 2: Convert to fraction form
    403,922.70/605,884.05 = 325,190.70/x
  3. Step 3: Cross multiply
    403,922.70x = 605,884.05 × 325,190.70
  4. Step 4: Simplify right side
    403,922.70x = 197,027,858,338.34
  5. Step 5: Solve for x
    x = 197,027,858,338.34/403,922.70
  6. Step 6: Final answer
    x = 487,786.05

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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.