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Finding the Fourth Proportional to 19,042.62, 28,568.97 and 7,945.62

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Solution

The fourth proportional to 19,042.62, 28,568.97 and 7,945.62 is: 11,920.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,042.62 : 28,568.97 = 7,945.62 : x
  2. Step 2: Convert to fraction form
    19,042.62/28,568.97 = 7,945.62/x
  3. Step 3: Cross multiply
    19,042.62x = 28,568.97 × 7,945.62
  4. Step 4: Simplify right side
    19,042.62x = 226,998,179.41
  5. Step 5: Solve for x
    x = 226,998,179.41/19,042.62
  6. Step 6: Final answer
    x = 11,920.53

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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.