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Finding the Fourth Proportional to 7,951.69, 11,869.19 and 7,365.25

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Solution

The fourth proportional to 7,951.69, 11,869.19 and 7,365.25 is: 10,993.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.69 : 11,869.19 = 7,365.25 : x
  2. Step 2: Convert to fraction form
    7,951.69/11,869.19 = 7,365.25/x
  3. Step 3: Cross multiply
    7,951.69x = 11,869.19 × 7,365.25
  4. Step 4: Simplify right side
    7,951.69x = 87,419,551.65
  5. Step 5: Solve for x
    x = 87,419,551.65/7,951.69
  6. Step 6: Final answer
    x = 10,993.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.