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Finding the Fourth Proportional to 7,910.70, 11,866.29 and 2,716.50

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Solution

The fourth proportional to 7,910.70, 11,866.29 and 2,716.50 is: 4,074.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.70 : 11,866.29 = 2,716.50 : x
  2. Step 2: Convert to fraction form
    7,910.70/11,866.29 = 2,716.50/x
  3. Step 3: Cross multiply
    7,910.70x = 11,866.29 × 2,716.50
  4. Step 4: Simplify right side
    7,910.70x = 32,234,776.79
  5. Step 5: Solve for x
    x = 32,234,776.79/7,910.70
  6. Step 6: Final answer
    x = 4,074.83

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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.