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Finding the Fourth Proportional to 72,561.60, 108,738.56 and 41,332.32

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Solution

The fourth proportional to 72,561.60, 108,738.56 and 41,332.32 is: 61,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,561.60 : 108,738.56 = 41,332.32 : x
  2. Step 2: Convert to fraction form
    72,561.60/108,738.56 = 41,332.32/x
  3. Step 3: Cross multiply
    72,561.60x = 108,738.56 × 41,332.32
  4. Step 4: Simplify right side
    72,561.60x = 4,494,416,958.26
  5. Step 5: Solve for x
    x = 4,494,416,958.26/72,561.60
  6. Step 6: Final answer
    x = 61,939.33

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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.