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Finding the Fourth Proportional to 392,716.67, 589,063.25 and 108,424.54

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Solution

The fourth proportional to 392,716.67, 589,063.25 and 108,424.54 is: 162,633.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,716.67 : 589,063.25 = 108,424.54 : x
  2. Step 2: Convert to fraction form
    392,716.67/589,063.25 = 108,424.54/x
  3. Step 3: Cross multiply
    392,716.67x = 589,063.25 × 108,424.54
  4. Step 4: Simplify right side
    392,716.67x = 63,868,912,919.55
  5. Step 5: Solve for x
    x = 63,868,912,919.55/392,716.67
  6. Step 6: Final answer
    x = 162,633.57

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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.