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Finding the Fourth Proportional to 25,481.49, 38,229.98 and 7,951.47

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Solution

The fourth proportional to 25,481.49, 38,229.98 and 7,951.47 is: 11,929.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,481.49 : 38,229.98 = 7,951.47 : x
  2. Step 2: Convert to fraction form
    25,481.49/38,229.98 = 7,951.47/x
  3. Step 3: Cross multiply
    25,481.49x = 38,229.98 × 7,951.47
  4. Step 4: Simplify right side
    25,481.49x = 303,984,355.95
  5. Step 5: Solve for x
    x = 303,984,355.95/25,481.49
  6. Step 6: Final answer
    x = 11,929.62

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1.5x scale

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.