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Finding the Fourth Proportional to 619,408.56, 854,900.50 and 404,174.96

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Solution

The fourth proportional to 619,408.56, 854,900.50 and 404,174.96 is: 557,837.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,408.56 : 854,900.50 = 404,174.96 : x
  2. Step 2: Convert to fraction form
    619,408.56/854,900.50 = 404,174.96/x
  3. Step 3: Cross multiply
    619,408.56x = 854,900.50 × 404,174.96
  4. Step 4: Simplify right side
    619,408.56x = 345,529,375,391.48
  5. Step 5: Solve for x
    x = 345,529,375,391.48/619,408.56
  6. Step 6: Final answer
    x = 557,837.59

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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.