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Finding the Fourth Proportional to 71,059.68, 106,589.52 and 18,468.81

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Solution

The fourth proportional to 71,059.68, 106,589.52 and 18,468.81 is: 27,703.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,059.68 : 106,589.52 = 18,468.81 : x
  2. Step 2: Convert to fraction form
    71,059.68/106,589.52 = 18,468.81/x
  3. Step 3: Cross multiply
    71,059.68x = 106,589.52 × 18,468.81
  4. Step 4: Simplify right side
    71,059.68x = 1,968,581,592.87
  5. Step 5: Solve for x
    x = 1,968,581,592.87/71,059.68
  6. Step 6: Final answer
    x = 27,703.22

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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.