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Finding the Fourth Proportional to 382,445.62, 527,680.47 and 239,133.94

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Solution

The fourth proportional to 382,445.62, 527,680.47 and 239,133.94 is: 329,945.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,445.62 : 527,680.47 = 239,133.94 : x
  2. Step 2: Convert to fraction form
    382,445.62/527,680.47 = 239,133.94/x
  3. Step 3: Cross multiply
    382,445.62x = 527,680.47 × 239,133.94
  4. Step 4: Simplify right side
    382,445.62x = 126,186,309,429.70
  5. Step 5: Solve for x
    x = 126,186,309,429.70/382,445.62
  6. Step 6: Final answer
    x = 329,945.76

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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.