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Finding the Fourth Proportional to 68,849.76, 103,279.32 and 22,099.80

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Solution

The fourth proportional to 68,849.76, 103,279.32 and 22,099.80 is: 33,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,849.76 : 103,279.32 = 22,099.80 : x
  2. Step 2: Convert to fraction form
    68,849.76/103,279.32 = 22,099.80/x
  3. Step 3: Cross multiply
    68,849.76x = 103,279.32 × 22,099.80
  4. Step 4: Simplify right side
    68,849.76x = 2,282,452,316.14
  5. Step 5: Solve for x
    x = 2,282,452,316.14/68,849.76
  6. Step 6: Final answer
    x = 33,151.20

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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.