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Finding the Fourth Proportional to 9,173.25, 12,660.17 and 5,447.25

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Solution

The fourth proportional to 9,173.25, 12,660.17 and 5,447.25 is: 7,517.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,173.25 : 12,660.17 = 5,447.25 : x
  2. Step 2: Convert to fraction form
    9,173.25/12,660.17 = 5,447.25/x
  3. Step 3: Cross multiply
    9,173.25x = 12,660.17 × 5,447.25
  4. Step 4: Simplify right side
    9,173.25x = 68,963,083.80
  5. Step 5: Solve for x
    x = 68,963,083.80/9,173.25
  6. Step 6: Final answer
    x = 7,517.85

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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.