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Finding the Fourth Proportional to 73,905.40, 110,785.20 and 36,434.80

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Solution

The fourth proportional to 73,905.40, 110,785.20 and 36,434.80 is: 54,616.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,905.40 : 110,785.20 = 36,434.80 : x
  2. Step 2: Convert to fraction form
    73,905.40/110,785.20 = 36,434.80/x
  3. Step 3: Cross multiply
    73,905.40x = 110,785.20 × 36,434.80
  4. Step 4: Simplify right side
    73,905.40x = 4,036,436,604.96
  5. Step 5: Solve for x
    x = 4,036,436,604.96/73,905.40
  6. Step 6: Final answer
    x = 54,616.26

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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.