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Finding the Fourth Proportional to 75,891.90, 113,837.85 and 29,145.90

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Solution

The fourth proportional to 75,891.90, 113,837.85 and 29,145.90 is: 43,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,891.90 : 113,837.85 = 29,145.90 : x
  2. Step 2: Convert to fraction form
    75,891.90/113,837.85 = 29,145.90/x
  3. Step 3: Cross multiply
    75,891.90x = 113,837.85 × 29,145.90
  4. Step 4: Simplify right side
    75,891.90x = 3,317,906,592.32
  5. Step 5: Solve for x
    x = 3,317,906,592.32/75,891.90
  6. Step 6: Final answer
    x = 43,718.85

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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.