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Finding the Fourth Proportional to 71,599.23, 107,390.54 and 19,012.83

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Solution

The fourth proportional to 71,599.23, 107,390.54 and 19,012.83 is: 28,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,599.23 : 107,390.54 = 19,012.83 : x
  2. Step 2: Convert to fraction form
    71,599.23/107,390.54 = 19,012.83/x
  3. Step 3: Cross multiply
    71,599.23x = 107,390.54 × 19,012.83
  4. Step 4: Simplify right side
    71,599.23x = 2,041,797,985.56
  5. Step 5: Solve for x
    x = 2,041,797,985.56/71,599.23
  6. Step 6: Final answer
    x = 28,517.04

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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.