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Finding the Fourth Proportional to 172,898.73, 259,285.69 and 73,066.64

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Solution

The fourth proportional to 172,898.73, 259,285.69 and 73,066.64 is: 109,573.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,898.73 : 259,285.69 = 73,066.64 : x
  2. Step 2: Convert to fraction form
    172,898.73/259,285.69 = 73,066.64/x
  3. Step 3: Cross multiply
    172,898.73x = 259,285.69 × 73,066.64
  4. Step 4: Simplify right side
    172,898.73x = 18,945,132,506.62
  5. Step 5: Solve for x
    x = 18,945,132,506.62/172,898.73
  6. Step 6: Final answer
    x = 109,573.58

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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.