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Finding the Fourth Proportional to 316,936.20, 437,369.45 and 173,695.91

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Solution

The fourth proportional to 316,936.20, 437,369.45 and 173,695.91 is: 239,698.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,936.20 : 437,369.45 = 173,695.91 : x
  2. Step 2: Convert to fraction form
    316,936.20/437,369.45 = 173,695.91/x
  3. Step 3: Cross multiply
    316,936.20x = 437,369.45 × 173,695.91
  4. Step 4: Simplify right side
    316,936.20x = 75,969,281,568.62
  5. Step 5: Solve for x
    x = 75,969,281,568.62/316,936.20
  6. Step 6: Final answer
    x = 239,698.97

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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.