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Finding the Fourth Proportional to 8,651.68, 11,914.20 and 7,516.84

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Solution

The fourth proportional to 8,651.68, 11,914.20 and 7,516.84 is: 10,351.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.68 : 11,914.20 = 7,516.84 : x
  2. Step 2: Convert to fraction form
    8,651.68/11,914.20 = 7,516.84/x
  3. Step 3: Cross multiply
    8,651.68x = 11,914.20 × 7,516.84
  4. Step 4: Simplify right side
    8,651.68x = 89,557,135.13
  5. Step 5: Solve for x
    x = 89,557,135.13/8,651.68
  6. Step 6: Final answer
    x = 10,351.42

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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.