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Finding the Fourth Proportional to 73,635.49, 110,439.13 and 20,314.20

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Solution

The fourth proportional to 73,635.49, 110,439.13 and 20,314.20 is: 30,467.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,635.49 : 110,439.13 = 20,314.20 : x
  2. Step 2: Convert to fraction form
    73,635.49/110,439.13 = 20,314.20/x
  3. Step 3: Cross multiply
    73,635.49x = 110,439.13 × 20,314.20
  4. Step 4: Simplify right side
    73,635.49x = 2,243,482,574.65
  5. Step 5: Solve for x
    x = 2,243,482,574.65/73,635.49
  6. Step 6: Final answer
    x = 30,467.41

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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.