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Finding the Fourth Proportional to 419,014.44, 628,132.86 and 191,138.76

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Solution

The fourth proportional to 419,014.44, 628,132.86 and 191,138.76 is: 286,530.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,014.44 : 628,132.86 = 191,138.76 : x
  2. Step 2: Convert to fraction form
    419,014.44/628,132.86 = 191,138.76/x
  3. Step 3: Cross multiply
    419,014.44x = 628,132.86 × 191,138.76
  4. Step 4: Simplify right side
    419,014.44x = 120,060,535,975.65
  5. Step 5: Solve for x
    x = 120,060,535,975.65/419,014.44
  6. Step 6: Final answer
    x = 286,530.78

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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.