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Finding the Fourth Proportional to 393,856.53, 590,872.27 and 113,351.91

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Solution

The fourth proportional to 393,856.53, 590,872.27 and 113,351.91 is: 170,053.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,856.53 : 590,872.27 = 113,351.91 : x
  2. Step 2: Convert to fraction form
    393,856.53/590,872.27 = 113,351.91/x
  3. Step 3: Cross multiply
    393,856.53x = 590,872.27 × 113,351.91
  4. Step 4: Simplify right side
    393,856.53x = 66,976,498,083.92
  5. Step 5: Solve for x
    x = 66,976,498,083.92/393,856.53
  6. Step 6: Final answer
    x = 170,053.04

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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.