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Finding the Fourth Proportional to 172,908.44, 259,390.32 and 73,069.60

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Solution

The fourth proportional to 172,908.44, 259,390.32 and 73,069.60 is: 109,616.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,908.44 : 259,390.32 = 73,069.60 : x
  2. Step 2: Convert to fraction form
    172,908.44/259,390.32 = 73,069.60/x
  3. Step 3: Cross multiply
    172,908.44x = 259,390.32 × 73,069.60
  4. Step 4: Simplify right side
    172,908.44x = 18,953,546,926.27
  5. Step 5: Solve for x
    x = 18,953,546,926.27/172,908.44
  6. Step 6: Final answer
    x = 109,616.09

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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.