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Finding the Fourth Proportional to 100,551.10, 150,815.85 and 26,679.10

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Solution

The fourth proportional to 100,551.10, 150,815.85 and 26,679.10 is: 40,015.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,551.10 : 150,815.85 = 26,679.10 : x
  2. Step 2: Convert to fraction form
    100,551.10/150,815.85 = 26,679.10/x
  3. Step 3: Cross multiply
    100,551.10x = 150,815.85 × 26,679.10
  4. Step 4: Simplify right side
    100,551.10x = 4,023,631,143.74
  5. Step 5: Solve for x
    x = 4,023,631,143.74/100,551.10
  6. Step 6: Final answer
    x = 40,015.78

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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.