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Finding the Fourth Proportional to 73,120.32, 100,854.72 and 50,468.40

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Solution

The fourth proportional to 73,120.32, 100,854.72 and 50,468.40 is: 69,610.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,120.32 : 100,854.72 = 50,468.40 : x
  2. Step 2: Convert to fraction form
    73,120.32/100,854.72 = 50,468.40/x
  3. Step 3: Cross multiply
    73,120.32x = 100,854.72 × 50,468.40
  4. Step 4: Simplify right side
    73,120.32x = 5,089,976,350.85
  5. Step 5: Solve for x
    x = 5,089,976,350.85/73,120.32
  6. Step 6: Final answer
    x = 69,610.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.