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Finding the Fourth Proportional to 172,997.92, 238,731.69 and 101,425.60

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Solution

The fourth proportional to 172,997.92, 238,731.69 and 101,425.60 is: 139,964.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,997.92 : 238,731.69 = 101,425.60 : x
  2. Step 2: Convert to fraction form
    172,997.92/238,731.69 = 101,425.60/x
  3. Step 3: Cross multiply
    172,997.92x = 238,731.69 × 101,425.60
  4. Step 4: Simplify right side
    172,997.92x = 24,213,504,897.26
  5. Step 5: Solve for x
    x = 24,213,504,897.26/172,997.92
  6. Step 6: Final answer
    x = 139,964.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.