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Finding the Fourth Proportional to 75,279.38, 103,885.54 and 41,745.38

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Solution

The fourth proportional to 75,279.38, 103,885.54 and 41,745.38 is: 57,608.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,279.38 : 103,885.54 = 41,745.38 : x
  2. Step 2: Convert to fraction form
    75,279.38/103,885.54 = 41,745.38/x
  3. Step 3: Cross multiply
    75,279.38x = 103,885.54 × 41,745.38
  4. Step 4: Simplify right side
    75,279.38x = 4,336,740,720.01
  5. Step 5: Solve for x
    x = 4,336,740,720.01/75,279.38
  6. Step 6: Final answer
    x = 57,608.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.