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Finding the Fourth Proportional to 53,909.91, 80,879.43 and 30,552.75

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Solution

The fourth proportional to 53,909.91, 80,879.43 and 30,552.75 is: 45,837.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,909.91 : 80,879.43 = 30,552.75 : x
  2. Step 2: Convert to fraction form
    53,909.91/80,879.43 = 30,552.75/x
  3. Step 3: Cross multiply
    53,909.91x = 80,879.43 × 30,552.75
  4. Step 4: Simplify right side
    53,909.91x = 2,471,089,004.93
  5. Step 5: Solve for x
    x = 2,471,089,004.93/53,909.91
  6. Step 6: Final answer
    x = 45,837.38

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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.