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Finding the Fourth Proportional to 393,588.25, 590,385.11 and 168,759.17

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Solution

The fourth proportional to 393,588.25, 590,385.11 and 168,759.17 is: 253,139.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,588.25 : 590,385.11 = 168,759.17 : x
  2. Step 2: Convert to fraction form
    393,588.25/590,385.11 = 168,759.17/x
  3. Step 3: Cross multiply
    393,588.25x = 590,385.11 × 168,759.17
  4. Step 4: Simplify right side
    393,588.25x = 99,632,901,143.96
  5. Step 5: Solve for x
    x = 99,632,901,143.96/393,588.25
  6. Step 6: Final answer
    x = 253,139.93

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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.