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Finding the Fourth Proportional to 71,995.93, 107,986.60 and 19,410.73

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Solution

The fourth proportional to 71,995.93, 107,986.60 and 19,410.73 is: 29,114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,995.93 : 107,986.60 = 19,410.73 : x
  2. Step 2: Convert to fraction form
    71,995.93/107,986.60 = 19,410.73/x
  3. Step 3: Cross multiply
    71,995.93x = 107,986.60 × 19,410.73
  4. Step 4: Simplify right side
    71,995.93x = 2,096,098,736.22
  5. Step 5: Solve for x
    x = 2,096,098,736.22/71,995.93
  6. Step 6: Final answer
    x = 29,114.13

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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.