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Finding the Fourth Proportional to 8,716.11, 13,080.08 and 4,336.64

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Solution

The fourth proportional to 8,716.11, 13,080.08 and 4,336.64 is: 6,507.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.11 : 13,080.08 = 4,336.64 : x
  2. Step 2: Convert to fraction form
    8,716.11/13,080.08 = 4,336.64/x
  3. Step 3: Cross multiply
    8,716.11x = 13,080.08 × 4,336.64
  4. Step 4: Simplify right side
    8,716.11x = 56,723,592.62
  5. Step 5: Solve for x
    x = 56,723,592.62/8,716.11
  6. Step 6: Final answer
    x = 6,507.91

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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.