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Finding the Fourth Proportional to 52,757.87, 79,111.29 and 19,493.60

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Solution

The fourth proportional to 52,757.87, 79,111.29 and 19,493.60 is: 29,230.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,757.87 : 79,111.29 = 19,493.60 : x
  2. Step 2: Convert to fraction form
    52,757.87/79,111.29 = 19,493.60/x
  3. Step 3: Cross multiply
    52,757.87x = 79,111.29 × 19,493.60
  4. Step 4: Simplify right side
    52,757.87x = 1,542,163,842.74
  5. Step 5: Solve for x
    x = 1,542,163,842.74/52,757.87
  6. Step 6: Final answer
    x = 29,230.97

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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.