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Finding the Fourth Proportional to 419,241.68, 628,885.47 and 119,698.82

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Solution

The fourth proportional to 419,241.68, 628,885.47 and 119,698.82 is: 179,554.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,241.68 : 628,885.47 = 119,698.82 : x
  2. Step 2: Convert to fraction form
    419,241.68/628,885.47 = 119,698.82/x
  3. Step 3: Cross multiply
    419,241.68x = 628,885.47 × 119,698.82
  4. Step 4: Simplify right side
    419,241.68x = 75,276,848,674.15
  5. Step 5: Solve for x
    x = 75,276,848,674.15/419,241.68
  6. Step 6: Final answer
    x = 179,554.78

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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.