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Finding the Fourth Proportional to 10,992.82, 15,170.10 and 5,957.09

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Solution

The fourth proportional to 10,992.82, 15,170.10 and 5,957.09 is: 8,220.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.82 : 15,170.10 = 5,957.09 : x
  2. Step 2: Convert to fraction form
    10,992.82/15,170.10 = 5,957.09/x
  3. Step 3: Cross multiply
    10,992.82x = 15,170.10 × 5,957.09
  4. Step 4: Simplify right side
    10,992.82x = 90,369,651.01
  5. Step 5: Solve for x
    x = 90,369,651.01/10,992.82
  6. Step 6: Final answer
    x = 8,220.79

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1.5x scale

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.