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Finding the Fourth Proportional to 133,856.55, 200,684.97 and 80,536.04

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Solution

The fourth proportional to 133,856.55, 200,684.97 and 80,536.04 is: 120,743.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,856.55 : 200,684.97 = 80,536.04 : x
  2. Step 2: Convert to fraction form
    133,856.55/200,684.97 = 80,536.04/x
  3. Step 3: Cross multiply
    133,856.55x = 200,684.97 × 80,536.04
  4. Step 4: Simplify right side
    133,856.55x = 16,162,372,771.32
  5. Step 5: Solve for x
    x = 16,162,372,771.32/133,856.55
  6. Step 6: Final answer
    x = 120,743.98

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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.