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Finding the Fourth Proportional to 71,601.48, 107,393.91 and 19,015.08

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Solution

The fourth proportional to 71,601.48, 107,393.91 and 19,015.08 is: 28,520.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,601.48 : 107,393.91 = 19,015.08 : x
  2. Step 2: Convert to fraction form
    71,601.48/107,393.91 = 19,015.08/x
  3. Step 3: Cross multiply
    71,601.48x = 107,393.91 × 19,015.08
  4. Step 4: Simplify right side
    71,601.48x = 2,042,103,790.16
  5. Step 5: Solve for x
    x = 2,042,103,790.16/71,601.48
  6. Step 6: Final answer
    x = 28,520.41

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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.