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Finding the Fourth Proportional to 392,976.50, 588,971.79 and 168,072.98

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Solution

The fourth proportional to 392,976.50, 588,971.79 and 168,072.98 is: 251,898.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,976.50 : 588,971.79 = 168,072.98 : x
  2. Step 2: Convert to fraction form
    392,976.50/588,971.79 = 168,072.98/x
  3. Step 3: Cross multiply
    392,976.50x = 588,971.79 × 168,072.98
  4. Step 4: Simplify right side
    392,976.50x = 98,990,240,936.38
  5. Step 5: Solve for x
    x = 98,990,240,936.38/392,976.50
  6. Step 6: Final answer
    x = 251,898.63

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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.