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Finding the Fourth Proportional to 14,793.56, 20,415.28 and 8,079.39

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Solution

The fourth proportional to 14,793.56, 20,415.28 and 8,079.39 is: 11,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,793.56 : 20,415.28 = 8,079.39 : x
  2. Step 2: Convert to fraction form
    14,793.56/20,415.28 = 8,079.39/x
  3. Step 3: Cross multiply
    14,793.56x = 20,415.28 × 8,079.39
  4. Step 4: Simplify right side
    14,793.56x = 164,942,886.80
  5. Step 5: Solve for x
    x = 164,942,886.80/14,793.56
  6. Step 6: Final answer
    x = 11,149.64

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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.