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Finding the Fourth Proportional to 393,169.29, 589,754.55 and 168,512.15

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Solution

The fourth proportional to 393,169.29, 589,754.55 and 168,512.15 is: 252,768.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,169.29 : 589,754.55 = 168,512.15 : x
  2. Step 2: Convert to fraction form
    393,169.29/589,754.55 = 168,512.15/x
  3. Step 3: Cross multiply
    393,169.29x = 589,754.55 × 168,512.15
  4. Step 4: Simplify right side
    393,169.29x = 99,380,804,244.01
  5. Step 5: Solve for x
    x = 99,380,804,244.01/393,169.29
  6. Step 6: Final answer
    x = 252,768.48

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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.