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Finding the Fourth Proportional to 120,691.61, 181,053.32 and 44,779.82

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Solution

The fourth proportional to 120,691.61, 181,053.32 and 44,779.82 is: 67,175.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,691.61 : 181,053.32 = 44,779.82 : x
  2. Step 2: Convert to fraction form
    120,691.61/181,053.32 = 44,779.82/x
  3. Step 3: Cross multiply
    120,691.61x = 181,053.32 × 44,779.82
  4. Step 4: Simplify right side
    120,691.61x = 8,107,535,476.66
  5. Step 5: Solve for x
    x = 8,107,535,476.66/120,691.61
  6. Step 6: Final answer
    x = 67,175.63

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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.