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Finding the Fourth Proportional to 319,574.38, 440,997.87 and 183,512.61

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Solution

The fourth proportional to 319,574.38, 440,997.87 and 183,512.61 is: 253,238.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,574.38 : 440,997.87 = 183,512.61 : x
  2. Step 2: Convert to fraction form
    319,574.38/440,997.87 = 183,512.61/x
  3. Step 3: Cross multiply
    319,574.38x = 440,997.87 × 183,512.61
  4. Step 4: Simplify right side
    319,574.38x = 80,928,670,128.14
  5. Step 5: Solve for x
    x = 80,928,670,128.14/319,574.38
  6. Step 6: Final answer
    x = 253,238.92

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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.