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Finding the Fourth Proportional to 619,063.46, 854,343.16 and 347,218.56

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Solution

The fourth proportional to 619,063.46, 854,343.16 and 347,218.56 is: 479,181.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,063.46 : 854,343.16 = 347,218.56 : x
  2. Step 2: Convert to fraction form
    619,063.46/854,343.16 = 347,218.56/x
  3. Step 3: Cross multiply
    619,063.46x = 854,343.16 × 347,218.56
  4. Step 4: Simplify right side
    619,063.46x = 296,643,801,761.05
  5. Step 5: Solve for x
    x = 296,643,801,761.05/619,063.46
  6. Step 6: Final answer
    x = 479,181.57

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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.