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Finding the Fourth Proportional to 91,410.72, 126,109.68 and 59,568

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Solution

The fourth proportional to 91,410.72, 126,109.68 and 59,568 is: 82,179.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,410.72 : 126,109.68 = 59,568 : x
  2. Step 2: Convert to fraction form
    91,410.72/126,109.68 = 59,568/x
  3. Step 3: Cross multiply
    91,410.72x = 126,109.68 × 59,568
  4. Step 4: Simplify right side
    91,410.72x = 7,512,101,418.24
  5. Step 5: Solve for x
    x = 7,512,101,418.24/91,410.72
  6. Step 6: Final answer
    x = 82,179.65

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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.