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Finding the Fourth Proportional to 14,793.12, 20,414.66 and 8,078.94

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Solution

The fourth proportional to 14,793.12, 20,414.66 and 8,078.94 is: 11,149.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,793.12 : 20,414.66 = 8,078.94 : x
  2. Step 2: Convert to fraction form
    14,793.12/20,414.66 = 8,078.94/x
  3. Step 3: Cross multiply
    14,793.12x = 20,414.66 × 8,078.94
  4. Step 4: Simplify right side
    14,793.12x = 164,928,825.88
  5. Step 5: Solve for x
    x = 164,928,825.88/14,793.12
  6. Step 6: Final answer
    x = 11,149.03

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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.