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Finding the Fourth Proportional to 9,183.54, 12,672.54 and 5,205.28

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Solution

The fourth proportional to 9,183.54, 12,672.54 and 5,205.28 is: 7,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,183.54 : 12,672.54 = 5,205.28 : x
  2. Step 2: Convert to fraction form
    9,183.54/12,672.54 = 5,205.28/x
  3. Step 3: Cross multiply
    9,183.54x = 12,672.54 × 5,205.28
  4. Step 4: Simplify right side
    9,183.54x = 65,964,119.01
  5. Step 5: Solve for x
    x = 65,964,119.01/9,183.54
  6. Step 6: Final answer
    x = 7,182.86

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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.