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Finding the Fourth Proportional to 14,793.68, 20,415.20 and 8,079.32

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Solution

The fourth proportional to 14,793.68, 20,415.20 and 8,079.32 is: 11,149.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,793.68 : 20,415.20 = 8,079.32 : x
  2. Step 2: Convert to fraction form
    14,793.68/20,415.20 = 8,079.32/x
  3. Step 3: Cross multiply
    14,793.68x = 20,415.20 × 8,079.32
  4. Step 4: Simplify right side
    14,793.68x = 164,940,933.66
  5. Step 5: Solve for x
    x = 164,940,933.66/14,793.68
  6. Step 6: Final answer
    x = 11,149.42

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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.