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Finding the Fourth Proportional to 466,672.20, 699,230.70 and 438,678.60

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Solution

The fourth proportional to 466,672.20, 699,230.70 and 438,678.60 is: 657,286.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,672.20 : 699,230.70 = 438,678.60 : x
  2. Step 2: Convert to fraction form
    466,672.20/699,230.70 = 438,678.60/x
  3. Step 3: Cross multiply
    466,672.20x = 699,230.70 × 438,678.60
  4. Step 4: Simplify right side
    466,672.20x = 306,737,544,553.02
  5. Step 5: Solve for x
    x = 306,737,544,553.02/466,672.20
  6. Step 6: Final answer
    x = 657,286.94

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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.