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Finding the Fourth Proportional to 694,028.86, 957,753.22 and 388,101.74

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Solution

The fourth proportional to 694,028.86, 957,753.22 and 388,101.74 is: 535,576.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,028.86 : 957,753.22 = 388,101.74 : x
  2. Step 2: Convert to fraction form
    694,028.86/957,753.22 = 388,101.74/x
  3. Step 3: Cross multiply
    694,028.86x = 957,753.22 × 388,101.74
  4. Step 4: Simplify right side
    694,028.86x = 371,705,691,172.60
  5. Step 5: Solve for x
    x = 371,705,691,172.60/694,028.86
  6. Step 6: Final answer
    x = 535,576.71

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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.