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Finding the Fourth Proportional to 393,587.25, 590,383.61 and 168,758.17

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Solution

The fourth proportional to 393,587.25, 590,383.61 and 168,758.17 is: 253,138.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,587.25 : 590,383.61 = 168,758.17 : x
  2. Step 2: Convert to fraction form
    393,587.25/590,383.61 = 168,758.17/x
  3. Step 3: Cross multiply
    393,587.25x = 590,383.61 × 168,758.17
  4. Step 4: Simplify right side
    393,587.25x = 99,632,057,621.59
  5. Step 5: Solve for x
    x = 99,632,057,621.59/393,587.25
  6. Step 6: Final answer
    x = 253,138.43

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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.