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Finding the Fourth Proportional to 115,791.60, 173,703.60 and 49,231.20

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Solution

The fourth proportional to 115,791.60, 173,703.60 and 49,231.20 is: 73,853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,791.60 : 173,703.60 = 49,231.20 : x
  2. Step 2: Convert to fraction form
    115,791.60/173,703.60 = 49,231.20/x
  3. Step 3: Cross multiply
    115,791.60x = 173,703.60 × 49,231.20
  4. Step 4: Simplify right side
    115,791.60x = 8,551,636,672.32
  5. Step 5: Solve for x
    x = 8,551,636,672.32/115,791.60
  6. Step 6: Final answer
    x = 73,853.69

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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.