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Finding the Fourth Proportional to 303,543.38, 418,944.69 and 181,043.61

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Solution

The fourth proportional to 303,543.38, 418,944.69 and 181,043.61 is: 249,872.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,543.38 : 418,944.69 = 181,043.61 : x
  2. Step 2: Convert to fraction form
    303,543.38/418,944.69 = 181,043.61/x
  3. Step 3: Cross multiply
    303,543.38x = 418,944.69 × 181,043.61
  4. Step 4: Simplify right side
    303,543.38x = 75,847,259,067.93
  5. Step 5: Solve for x
    x = 75,847,259,067.93/303,543.38
  6. Step 6: Final answer
    x = 249,872.89

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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.