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Finding the Fourth Proportional to 267,696.78, 401,009.79 and 161,021.82

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Solution

The fourth proportional to 267,696.78, 401,009.79 and 161,021.82 is: 241,210.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,696.78 : 401,009.79 = 161,021.82 : x
  2. Step 2: Convert to fraction form
    267,696.78/401,009.79 = 161,021.82/x
  3. Step 3: Cross multiply
    267,696.78x = 401,009.79 × 161,021.82
  4. Step 4: Simplify right side
    267,696.78x = 64,571,326,223.62
  5. Step 5: Solve for x
    x = 64,571,326,223.62/267,696.78
  6. Step 6: Final answer
    x = 241,210.69

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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.