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Finding the Fourth Proportional to 407,591.67, 611,190.81 and 170,870.79

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Solution

The fourth proportional to 407,591.67, 611,190.81 and 170,870.79 is: 256,223.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,591.67 : 611,190.81 = 170,870.79 : x
  2. Step 2: Convert to fraction form
    407,591.67/611,190.81 = 170,870.79/x
  3. Step 3: Cross multiply
    407,591.67x = 611,190.81 × 170,870.79
  4. Step 4: Simplify right side
    407,591.67x = 104,434,656,545.44
  5. Step 5: Solve for x
    x = 104,434,656,545.44/407,591.67
  6. Step 6: Final answer
    x = 256,223.73

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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.