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Finding the Fourth Proportional to 15,062.93, 20,785.61 and 8,348.84

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Solution

The fourth proportional to 15,062.93, 20,785.61 and 8,348.84 is: 11,520.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.93 : 20,785.61 = 8,348.84 : x
  2. Step 2: Convert to fraction form
    15,062.93/20,785.61 = 8,348.84/x
  3. Step 3: Cross multiply
    15,062.93x = 20,785.61 × 8,348.84
  4. Step 4: Simplify right side
    15,062.93x = 173,535,649.14
  5. Step 5: Solve for x
    x = 173,535,649.14/15,062.93
  6. Step 6: Final answer
    x = 11,520.71

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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.