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Finding the Fourth Proportional to 694,086.84, 957,834.45 and 388,163.70

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Solution

The fourth proportional to 694,086.84, 957,834.45 and 388,163.70 is: 535,662.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,086.84 : 957,834.45 = 388,163.70 : x
  2. Step 2: Convert to fraction form
    694,086.84/957,834.45 = 388,163.70/x
  3. Step 3: Cross multiply
    694,086.84x = 957,834.45 × 388,163.70
  4. Step 4: Simplify right side
    694,086.84x = 371,796,564,099.47
  5. Step 5: Solve for x
    x = 371,796,564,099.47/694,086.84
  6. Step 6: Final answer
    x = 535,662.89

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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.