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Finding the Fourth Proportional to 71,861.51, 107,787.51 and 29,730.58

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Solution

The fourth proportional to 71,861.51, 107,787.51 and 29,730.58 is: 44,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,861.51 : 107,787.51 = 29,730.58 : x
  2. Step 2: Convert to fraction form
    71,861.51/107,787.51 = 29,730.58/x
  3. Step 3: Cross multiply
    71,861.51x = 107,787.51 × 29,730.58
  4. Step 4: Simplify right side
    71,861.51x = 3,204,584,919.59
  5. Step 5: Solve for x
    x = 3,204,584,919.59/71,861.51
  6. Step 6: Final answer
    x = 44,593.90

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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.