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Finding the Fourth Proportional to 67,321.85, 100,982.46 and 17,397.70

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Solution

The fourth proportional to 67,321.85, 100,982.46 and 17,397.70 is: 26,096.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,321.85 : 100,982.46 = 17,397.70 : x
  2. Step 2: Convert to fraction form
    67,321.85/100,982.46 = 17,397.70/x
  3. Step 3: Cross multiply
    67,321.85x = 100,982.46 × 17,397.70
  4. Step 4: Simplify right side
    67,321.85x = 1,756,862,357.13
  5. Step 5: Solve for x
    x = 1,756,862,357.13/67,321.85
  6. Step 6: Final answer
    x = 26,096.47

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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.