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Finding the Fourth Proportional to 48,939.80, 73,412.10 and 25,611.80

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Solution

The fourth proportional to 48,939.80, 73,412.10 and 25,611.80 is: 38,418.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,939.80 : 73,412.10 = 25,611.80 : x
  2. Step 2: Convert to fraction form
    48,939.80/73,412.10 = 25,611.80/x
  3. Step 3: Cross multiply
    48,939.80x = 73,412.10 × 25,611.80
  4. Step 4: Simplify right side
    48,939.80x = 1,880,216,022.78
  5. Step 5: Solve for x
    x = 1,880,216,022.78/48,939.80
  6. Step 6: Final answer
    x = 38,418.96

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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.