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Finding the Fourth Proportional to 120,874.63, 181,344.75 and 36,631.39

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Solution

The fourth proportional to 120,874.63, 181,344.75 and 36,631.39 is: 54,957.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,874.63 : 181,344.75 = 36,631.39 : x
  2. Step 2: Convert to fraction form
    120,874.63/181,344.75 = 36,631.39/x
  3. Step 3: Cross multiply
    120,874.63x = 181,344.75 × 36,631.39
  4. Step 4: Simplify right side
    120,874.63x = 6,642,910,261.70
  5. Step 5: Solve for x
    x = 6,642,910,261.70/120,874.63
  6. Step 6: Final answer
    x = 54,957.03

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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.