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Finding the Fourth Proportional to 65,908.67, 98,879.87 and 19,161.55

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Solution

The fourth proportional to 65,908.67, 98,879.87 and 19,161.55 is: 28,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,908.67 : 98,879.87 = 19,161.55 : x
  2. Step 2: Convert to fraction form
    65,908.67/98,879.87 = 19,161.55/x
  3. Step 3: Cross multiply
    65,908.67x = 98,879.87 × 19,161.55
  4. Step 4: Simplify right side
    65,908.67x = 1,894,690,982.79
  5. Step 5: Solve for x
    x = 1,894,690,982.79/65,908.67
  6. Step 6: Final answer
    x = 28,747.22

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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.