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Finding the Fourth Proportional to 67,021.98, 100,531.17 and 22,648.38

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Solution

The fourth proportional to 67,021.98, 100,531.17 and 22,648.38 is: 33,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,021.98 : 100,531.17 = 22,648.38 : x
  2. Step 2: Convert to fraction form
    67,021.98/100,531.17 = 22,648.38/x
  3. Step 3: Cross multiply
    67,021.98x = 100,531.17 × 22,648.38
  4. Step 4: Simplify right side
    67,021.98x = 2,276,868,140.00
  5. Step 5: Solve for x
    x = 2,276,868,140.00/67,021.98
  6. Step 6: Final answer
    x = 33,971.96

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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.