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Finding the Fourth Proportional to 403,598.85, 605,399.04 and 378,936.66

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Solution

The fourth proportional to 403,598.85, 605,399.04 and 378,936.66 is: 568,405.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,598.85 : 605,399.04 = 378,936.66 : x
  2. Step 2: Convert to fraction form
    403,598.85/605,399.04 = 378,936.66/x
  3. Step 3: Cross multiply
    403,598.85x = 605,399.04 × 378,936.66
  4. Step 4: Simplify right side
    403,598.85x = 229,407,892,455.05
  5. Step 5: Solve for x
    x = 229,407,892,455.05/403,598.85
  6. Step 6: Final answer
    x = 568,405.72

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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.