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Finding the Fourth Proportional to 619,436.31, 854,740.26 and 347,493.78

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Solution

The fourth proportional to 619,436.31, 854,740.26 and 347,493.78 is: 479,495.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,436.31 : 854,740.26 = 347,493.78 : x
  2. Step 2: Convert to fraction form
    619,436.31/854,740.26 = 347,493.78/x
  3. Step 3: Cross multiply
    619,436.31x = 854,740.26 × 347,493.78
  4. Step 4: Simplify right side
    619,436.31x = 297,016,923,865.58
  5. Step 5: Solve for x
    x = 297,016,923,865.58/619,436.31
  6. Step 6: Final answer
    x = 479,495.50

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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.