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Finding the Fourth Proportional to 9,174.92, 12,661.13 and 5,196.38

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Solution

The fourth proportional to 9,174.92, 12,661.13 and 5,196.38 is: 7,170.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,174.92 : 12,661.13 = 5,196.38 : x
  2. Step 2: Convert to fraction form
    9,174.92/12,661.13 = 5,196.38/x
  3. Step 3: Cross multiply
    9,174.92x = 12,661.13 × 5,196.38
  4. Step 4: Simplify right side
    9,174.92x = 65,792,016.73
  5. Step 5: Solve for x
    x = 65,792,016.73/9,174.92
  6. Step 6: Final answer
    x = 7,170.85

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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.