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Finding the Fourth Proportional to 694,063.51, 957,800.97 and 388,136.43

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Solution

The fourth proportional to 694,063.51, 957,800.97 and 388,136.43 is: 535,624.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,063.51 : 957,800.97 = 388,136.43 : x
  2. Step 2: Convert to fraction form
    694,063.51/957,800.97 = 388,136.43/x
  3. Step 3: Cross multiply
    694,063.51x = 957,800.97 × 388,136.43
  4. Step 4: Simplify right side
    694,063.51x = 371,757,449,146.34
  5. Step 5: Solve for x
    x = 371,757,449,146.34/694,063.51
  6. Step 6: Final answer
    x = 535,624.54

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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.