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Finding the Fourth Proportional to 72,999.48, 100,739.07 and 41,168.15

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Solution

The fourth proportional to 72,999.48, 100,739.07 and 41,168.15 is: 56,811.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,999.48 : 100,739.07 = 41,168.15 : x
  2. Step 2: Convert to fraction form
    72,999.48/100,739.07 = 41,168.15/x
  3. Step 3: Cross multiply
    72,999.48x = 100,739.07 × 41,168.15
  4. Step 4: Simplify right side
    72,999.48x = 4,147,241,144.62
  5. Step 5: Solve for x
    x = 4,147,241,144.62/72,999.48
  6. Step 6: Final answer
    x = 56,811.93

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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.