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Finding the Fourth Proportional to 126,593.56, 189,722.67 and 67,301.56

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Solution

The fourth proportional to 126,593.56, 189,722.67 and 67,301.56 is: 100,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,593.56 : 189,722.67 = 67,301.56 : x
  2. Step 2: Convert to fraction form
    126,593.56/189,722.67 = 67,301.56/x
  3. Step 3: Cross multiply
    126,593.56x = 189,722.67 × 67,301.56
  4. Step 4: Simplify right side
    126,593.56x = 12,768,631,658.37
  5. Step 5: Solve for x
    x = 12,768,631,658.37/126,593.56
  6. Step 6: Final answer
    x = 100,863.20

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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.