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Finding the Fourth Proportional to 73,136.94, 109,705.42 and 25,740.87

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Solution

The fourth proportional to 73,136.94, 109,705.42 and 25,740.87 is: 38,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,136.94 : 109,705.42 = 25,740.87 : x
  2. Step 2: Convert to fraction form
    73,136.94/109,705.42 = 25,740.87/x
  3. Step 3: Cross multiply
    73,136.94x = 109,705.42 × 25,740.87
  4. Step 4: Simplify right side
    73,136.94x = 2,823,912,954.52
  5. Step 5: Solve for x
    x = 2,823,912,954.52/73,136.94
  6. Step 6: Final answer
    x = 38,611.31

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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.