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Finding the Fourth Proportional to 543,514.40, 815,589.12 and 227,944.88

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Solution

The fourth proportional to 543,514.40, 815,589.12 and 227,944.88 is: 342,050.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,514.40 : 815,589.12 = 227,944.88 : x
  2. Step 2: Convert to fraction form
    543,514.40/815,589.12 = 227,944.88/x
  3. Step 3: Cross multiply
    543,514.40x = 815,589.12 × 227,944.88
  4. Step 4: Simplify right side
    543,514.40x = 185,909,364,087.71
  5. Step 5: Solve for x
    x = 185,909,364,087.71/543,514.40
  6. Step 6: Final answer
    x = 342,050.48

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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.