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Finding the Fourth Proportional to 127,951.92, 191,920.96 and 39,205.68

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Solution

The fourth proportional to 127,951.92, 191,920.96 and 39,205.68 is: 58,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,951.92 : 191,920.96 = 39,205.68 : x
  2. Step 2: Convert to fraction form
    127,951.92/191,920.96 = 39,205.68/x
  3. Step 3: Cross multiply
    127,951.92x = 191,920.96 × 39,205.68
  4. Step 4: Simplify right side
    127,951.92x = 7,524,391,743.05
  5. Step 5: Solve for x
    x = 7,524,391,743.05/127,951.92
  6. Step 6: Final answer
    x = 58,806.40

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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.