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Finding the Fourth Proportional to 339,428.31, 468,414.09 and 186,469.93

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Solution

The fourth proportional to 339,428.31, 468,414.09 and 186,469.93 is: 257,330.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,428.31 : 468,414.09 = 186,469.93 : x
  2. Step 2: Convert to fraction form
    339,428.31/468,414.09 = 186,469.93/x
  3. Step 3: Cross multiply
    339,428.31x = 468,414.09 × 186,469.93
  4. Step 4: Simplify right side
    339,428.31x = 87,345,143,158.83
  5. Step 5: Solve for x
    x = 87,345,143,158.83/339,428.31
  6. Step 6: Final answer
    x = 257,330.17

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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.