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Finding the Fourth Proportional to 49,081.53, 73,621.49 and 12,145.53

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Solution

The fourth proportional to 49,081.53, 73,621.49 and 12,145.53 is: 18,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,081.53 : 73,621.49 = 12,145.53 : x
  2. Step 2: Convert to fraction form
    49,081.53/73,621.49 = 12,145.53/x
  3. Step 3: Cross multiply
    49,081.53x = 73,621.49 × 12,145.53
  4. Step 4: Simplify right side
    49,081.53x = 894,171,954.71
  5. Step 5: Solve for x
    x = 894,171,954.71/49,081.53
  6. Step 6: Final answer
    x = 18,218.09

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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.