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Finding the Fourth Proportional to 126,608.22, 189,978.39 and 91,834.92

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Solution

The fourth proportional to 126,608.22, 189,978.39 and 91,834.92 is: 137,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,608.22 : 189,978.39 = 91,834.92 : x
  2. Step 2: Convert to fraction form
    126,608.22/189,978.39 = 91,834.92/x
  3. Step 3: Cross multiply
    126,608.22x = 189,978.39 × 91,834.92
  4. Step 4: Simplify right side
    126,608.22x = 17,446,650,247.38
  5. Step 5: Solve for x
    x = 17,446,650,247.38/126,608.22
  6. Step 6: Final answer
    x = 137,800.30

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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.