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Finding the Fourth Proportional to 80,392.86, 120,587.85 and 32,997.66

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Solution

The fourth proportional to 80,392.86, 120,587.85 and 32,997.66 is: 49,495.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,392.86 : 120,587.85 = 32,997.66 : x
  2. Step 2: Convert to fraction form
    80,392.86/120,587.85 = 32,997.66/x
  3. Step 3: Cross multiply
    80,392.86x = 120,587.85 × 32,997.66
  4. Step 4: Simplify right side
    80,392.86x = 3,979,116,874.43
  5. Step 5: Solve for x
    x = 3,979,116,874.43/80,392.86
  6. Step 6: Final answer
    x = 49,495.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.