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Finding the Fourth Proportional to 115,662.80, 173,634.60 and 73,542.80

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Solution

The fourth proportional to 115,662.80, 173,634.60 and 73,542.80 is: 110,403.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,662.80 : 173,634.60 = 73,542.80 : x
  2. Step 2: Convert to fraction form
    115,662.80/173,634.60 = 73,542.80/x
  3. Step 3: Cross multiply
    115,662.80x = 173,634.60 × 73,542.80
  4. Step 4: Simplify right side
    115,662.80x = 12,769,574,660.88
  5. Step 5: Solve for x
    x = 12,769,574,660.88/115,662.80
  6. Step 6: Final answer
    x = 110,403.47

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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.