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Finding the Fourth Proportional to 18,793.29, 28,191.36 and 6,313.38

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Solution

The fourth proportional to 18,793.29, 28,191.36 and 6,313.38 is: 9,470.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.29 : 28,191.36 = 6,313.38 : x
  2. Step 2: Convert to fraction form
    18,793.29/28,191.36 = 6,313.38/x
  3. Step 3: Cross multiply
    18,793.29x = 28,191.36 × 6,313.38
  4. Step 4: Simplify right side
    18,793.29x = 177,982,768.40
  5. Step 5: Solve for x
    x = 177,982,768.40/18,793.29
  6. Step 6: Final answer
    x = 9,470.55

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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.