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Finding the Fourth Proportional to 71,449.43, 98,608.34 and 41,242.86

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Solution

The fourth proportional to 71,449.43, 98,608.34 and 41,242.86 is: 56,919.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,449.43 : 98,608.34 = 41,242.86 : x
  2. Step 2: Convert to fraction form
    71,449.43/98,608.34 = 41,242.86/x
  3. Step 3: Cross multiply
    71,449.43x = 98,608.34 × 41,242.86
  4. Step 4: Simplify right side
    71,449.43x = 4,066,889,961.45
  5. Step 5: Solve for x
    x = 4,066,889,961.45/71,449.43
  6. Step 6: Final answer
    x = 56,919.84

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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.