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Finding the Fourth Proportional to 698,239.89, 963,571.68 and 396,433.89

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Solution

The fourth proportional to 698,239.89, 963,571.68 and 396,433.89 is: 547,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,239.89 : 963,571.68 = 396,433.89 : x
  2. Step 2: Convert to fraction form
    698,239.89/963,571.68 = 396,433.89/x
  3. Step 3: Cross multiply
    698,239.89x = 963,571.68 × 396,433.89
  4. Step 4: Simplify right side
    698,239.89x = 381,992,469,396.24
  5. Step 5: Solve for x
    x = 381,992,469,396.24/698,239.89
  6. Step 6: Final answer
    x = 547,079.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.