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Finding the Fourth Proportional to 11,059.12, 16,591.62 and 5,515.12

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Solution

The fourth proportional to 11,059.12, 16,591.62 and 5,515.12 is: 8,274.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,059.12 : 16,591.62 = 5,515.12 : x
  2. Step 2: Convert to fraction form
    11,059.12/16,591.62 = 5,515.12/x
  3. Step 3: Cross multiply
    11,059.12x = 16,591.62 × 5,515.12
  4. Step 4: Simplify right side
    11,059.12x = 91,504,775.29
  5. Step 5: Solve for x
    x = 91,504,775.29/11,059.12
  6. Step 6: Final answer
    x = 8,274.15

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1.5x scale

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.