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Finding the Fourth Proportional to 11,591.88, 17,411.12 and 6,921.04

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Solution

The fourth proportional to 11,591.88, 17,411.12 and 6,921.04 is: 10,395.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,591.88 : 17,411.12 = 6,921.04 : x
  2. Step 2: Convert to fraction form
    11,591.88/17,411.12 = 6,921.04/x
  3. Step 3: Cross multiply
    11,591.88x = 17,411.12 × 6,921.04
  4. Step 4: Simplify right side
    11,591.88x = 120,503,057.96
  5. Step 5: Solve for x
    x = 120,503,057.96/11,591.88
  6. Step 6: Final answer
    x = 10,395.47

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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.