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Finding the Fourth Proportional to 15,062.42, 20,786.14 and 8,348.48

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Solution

The fourth proportional to 15,062.42, 20,786.14 and 8,348.48 is: 11,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.42 : 20,786.14 = 8,348.48 : x
  2. Step 2: Convert to fraction form
    15,062.42/20,786.14 = 8,348.48/x
  3. Step 3: Cross multiply
    15,062.42x = 20,786.14 × 8,348.48
  4. Step 4: Simplify right side
    15,062.42x = 173,532,648.08
  5. Step 5: Solve for x
    x = 173,532,648.08/15,062.42
  6. Step 6: Final answer
    x = 11,520.90

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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.