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Finding the Fourth Proportional to 80,568.74, 120,894.06 and 36,186.44

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Solution

The fourth proportional to 80,568.74, 120,894.06 and 36,186.44 is: 54,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,568.74 : 120,894.06 = 36,186.44 : x
  2. Step 2: Convert to fraction form
    80,568.74/120,894.06 = 36,186.44/x
  3. Step 3: Cross multiply
    80,568.74x = 120,894.06 × 36,186.44
  4. Step 4: Simplify right side
    80,568.74x = 4,374,725,648.55
  5. Step 5: Solve for x
    x = 4,374,725,648.55/80,568.74
  6. Step 6: Final answer
    x = 54,298.05

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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.