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Finding the Fourth Proportional to 15,052.91, 20,772.13 and 8,245.58

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Solution

The fourth proportional to 15,052.91, 20,772.13 and 8,245.58 is: 11,378.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,052.91 : 20,772.13 = 8,245.58 : x
  2. Step 2: Convert to fraction form
    15,052.91/20,772.13 = 8,245.58/x
  3. Step 3: Cross multiply
    15,052.91x = 20,772.13 × 8,245.58
  4. Step 4: Simplify right side
    15,052.91x = 171,278,158.70
  5. Step 5: Solve for x
    x = 171,278,158.70/15,052.91
  6. Step 6: Final answer
    x = 11,378.41

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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.