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Finding the Fourth Proportional to 505,334, 757,747.20 and 168,255.56

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Solution

The fourth proportional to 505,334, 757,747.20 and 168,255.56 is: 252,298.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,334 : 757,747.20 = 168,255.56 : x
  2. Step 2: Convert to fraction form
    505,334/757,747.20 = 168,255.56/x
  3. Step 3: Cross multiply
    505,334x = 757,747.20 × 168,255.56
  4. Step 4: Simplify right side
    505,334x = 127,495,179,474.43
  5. Step 5: Solve for x
    x = 127,495,179,474.43/505,334
  6. Step 6: Final answer
    x = 252,298.83

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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.