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Finding the Fourth Proportional to 79,260.88, 118,930.23 and 31,874.06

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Solution

The fourth proportional to 79,260.88, 118,930.23 and 31,874.06 is: 47,826.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,260.88 : 118,930.23 = 31,874.06 : x
  2. Step 2: Convert to fraction form
    79,260.88/118,930.23 = 31,874.06/x
  3. Step 3: Cross multiply
    79,260.88x = 118,930.23 × 31,874.06
  4. Step 4: Simplify right side
    79,260.88x = 3,790,789,004.82
  5. Step 5: Solve for x
    x = 3,790,789,004.82/79,260.88
  6. Step 6: Final answer
    x = 47,826.73

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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.