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Finding the Fourth Proportional to 121,080.44, 181,620.66 and 36,840.44

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Solution

The fourth proportional to 121,080.44, 181,620.66 and 36,840.44 is: 55,260.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,080.44 : 181,620.66 = 36,840.44 : x
  2. Step 2: Convert to fraction form
    121,080.44/181,620.66 = 36,840.44/x
  3. Step 3: Cross multiply
    121,080.44x = 181,620.66 × 36,840.44
  4. Step 4: Simplify right side
    121,080.44x = 6,690,985,027.49
  5. Step 5: Solve for x
    x = 6,690,985,027.49/121,080.44
  6. Step 6: Final answer
    x = 55,260.66

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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.