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Finding the Fourth Proportional to 10,992.73, 15,170.72 and 6,211.02

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Solution

The fourth proportional to 10,992.73, 15,170.72 and 6,211.02 is: 8,571.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.73 : 15,170.72 = 6,211.02 : x
  2. Step 2: Convert to fraction form
    10,992.73/15,170.72 = 6,211.02/x
  3. Step 3: Cross multiply
    10,992.73x = 15,170.72 × 6,211.02
  4. Step 4: Simplify right side
    10,992.73x = 94,225,645.33
  5. Step 5: Solve for x
    x = 94,225,645.33/10,992.73
  6. Step 6: Final answer
    x = 8,571.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.