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Finding the Fourth Proportional to 75,311.46, 112,961.04 and 25,390.48

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Solution

The fourth proportional to 75,311.46, 112,961.04 and 25,390.48 is: 38,083.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,311.46 : 112,961.04 = 25,390.48 : x
  2. Step 2: Convert to fraction form
    75,311.46/112,961.04 = 25,390.48/x
  3. Step 3: Cross multiply
    75,311.46x = 112,961.04 × 25,390.48
  4. Step 4: Simplify right side
    75,311.46x = 2,868,135,026.90
  5. Step 5: Solve for x
    x = 2,868,135,026.90/75,311.46
  6. Step 6: Final answer
    x = 38,083.65

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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.