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Finding the Fourth Proportional to 251,789.39, 377,694.51 and 74,296.40

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Solution

The fourth proportional to 251,789.39, 377,694.51 and 74,296.40 is: 111,447.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,789.39 : 377,694.51 = 74,296.40 : x
  2. Step 2: Convert to fraction form
    251,789.39/377,694.51 = 74,296.40/x
  3. Step 3: Cross multiply
    251,789.39x = 377,694.51 × 74,296.40
  4. Step 4: Simplify right side
    251,789.39x = 28,061,342,021.28
  5. Step 5: Solve for x
    x = 28,061,342,021.28/251,789.39
  6. Step 6: Final answer
    x = 111,447.67

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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.