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Finding the Fourth Proportional to 605,889.27, 908,061.15 and 321,715.96

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Solution

The fourth proportional to 605,889.27, 908,061.15 and 321,715.96 is: 482,163.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,889.27 : 908,061.15 = 321,715.96 : x
  2. Step 2: Convert to fraction form
    605,889.27/908,061.15 = 321,715.96/x
  3. Step 3: Cross multiply
    605,889.27x = 908,061.15 × 321,715.96
  4. Step 4: Simplify right side
    605,889.27x = 292,137,762,340.80
  5. Step 5: Solve for x
    x = 292,137,762,340.80/605,889.27
  6. Step 6: Final answer
    x = 482,163.62

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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.