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Finding the Fourth Proportional to 19,034.88, 28,552.20 and 5,183.88

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Solution

The fourth proportional to 19,034.88, 28,552.20 and 5,183.88 is: 7,775.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,034.88 : 28,552.20 = 5,183.88 : x
  2. Step 2: Convert to fraction form
    19,034.88/28,552.20 = 5,183.88/x
  3. Step 3: Cross multiply
    19,034.88x = 28,552.20 × 5,183.88
  4. Step 4: Simplify right side
    19,034.88x = 148,011,178.54
  5. Step 5: Solve for x
    x = 148,011,178.54/19,034.88
  6. Step 6: Final answer
    x = 7,775.79

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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.