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Finding the Fourth Proportional to 75,279.90, 103,886.26 and 41,745.90

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Solution

The fourth proportional to 75,279.90, 103,886.26 and 41,745.90 is: 57,609.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,279.90 : 103,886.26 = 41,745.90 : x
  2. Step 2: Convert to fraction form
    75,279.90/103,886.26 = 41,745.90/x
  3. Step 3: Cross multiply
    75,279.90x = 103,886.26 × 41,745.90
  4. Step 4: Simplify right side
    75,279.90x = 4,336,825,421.33
  5. Step 5: Solve for x
    x = 4,336,825,421.33/75,279.90
  6. Step 6: Final answer
    x = 57,609.34

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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.