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Finding the Fourth Proportional to 79,176.49, 118,640.75 and 47,508.73

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Solution

The fourth proportional to 79,176.49, 118,640.75 and 47,508.73 is: 71,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,176.49 : 118,640.75 = 47,508.73 : x
  2. Step 2: Convert to fraction form
    79,176.49/118,640.75 = 47,508.73/x
  3. Step 3: Cross multiply
    79,176.49x = 118,640.75 × 47,508.73
  4. Step 4: Simplify right side
    79,176.49x = 5,636,470,765.54
  5. Step 5: Solve for x
    x = 5,636,470,765.54/79,176.49
  6. Step 6: Final answer
    x = 71,188.70

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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.