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Finding the Fourth Proportional to 338,418.50, 467,229.87 and 217,769.45

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Solution

The fourth proportional to 338,418.50, 467,229.87 and 217,769.45 is: 300,658.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,418.50 : 467,229.87 = 217,769.45 : x
  2. Step 2: Convert to fraction form
    338,418.50/467,229.87 = 217,769.45/x
  3. Step 3: Cross multiply
    338,418.50x = 467,229.87 × 217,769.45
  4. Step 4: Simplify right side
    338,418.50x = 101,748,392,981.55
  5. Step 5: Solve for x
    x = 101,748,392,981.55/338,418.50
  6. Step 6: Final answer
    x = 300,658.49

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1.5x scale

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.