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Finding the Fourth Proportional to 11,163.70, 16,725.30 and 5,307.40

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Solution

The fourth proportional to 11,163.70, 16,725.30 and 5,307.40 is: 7,951.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.70 : 16,725.30 = 5,307.40 : x
  2. Step 2: Convert to fraction form
    11,163.70/16,725.30 = 5,307.40/x
  3. Step 3: Cross multiply
    11,163.70x = 16,725.30 × 5,307.40
  4. Step 4: Simplify right side
    11,163.70x = 88,767,857.22
  5. Step 5: Solve for x
    x = 88,767,857.22/11,163.70
  6. Step 6: Final answer
    x = 7,951.47

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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.