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Finding the Fourth Proportional to 38,608.86, 57,879.78 and 15,229.56

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Solution

The fourth proportional to 38,608.86, 57,879.78 and 15,229.56 is: 22,831.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,608.86 : 57,879.78 = 15,229.56 : x
  2. Step 2: Convert to fraction form
    38,608.86/57,879.78 = 15,229.56/x
  3. Step 3: Cross multiply
    38,608.86x = 57,879.78 × 15,229.56
  4. Step 4: Simplify right side
    38,608.86x = 881,483,582.30
  5. Step 5: Solve for x
    x = 881,483,582.30/38,608.86
  6. Step 6: Final answer
    x = 22,831.12

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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.