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Finding the Fourth Proportional to 206,299.58, 284,786.69 and 129,930.92

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Solution

The fourth proportional to 206,299.58, 284,786.69 and 129,930.92 is: 179,363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,299.58 : 284,786.69 = 129,930.92 : x
  2. Step 2: Convert to fraction form
    206,299.58/284,786.69 = 129,930.92/x
  3. Step 3: Cross multiply
    206,299.58x = 284,786.69 × 129,930.92
  4. Step 4: Simplify right side
    206,299.58x = 37,002,594,561.87
  5. Step 5: Solve for x
    x = 37,002,594,561.87/206,299.58
  6. Step 6: Final answer
    x = 179,363.40

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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.