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Finding the Fourth Proportional to 79,930.78, 119,870.21 and 26,608.44

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Solution

The fourth proportional to 79,930.78, 119,870.21 and 26,608.44 is: 39,904.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,930.78 : 119,870.21 = 26,608.44 : x
  2. Step 2: Convert to fraction form
    79,930.78/119,870.21 = 26,608.44/x
  3. Step 3: Cross multiply
    79,930.78x = 119,870.21 × 26,608.44
  4. Step 4: Simplify right side
    79,930.78x = 3,189,558,691.22
  5. Step 5: Solve for x
    x = 3,189,558,691.22/79,930.78
  6. Step 6: Final answer
    x = 39,904.01

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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.