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Finding the Fourth Proportional to 336,735.20, 505,190.32 and 168,248.72

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Solution

The fourth proportional to 336,735.20, 505,190.32 and 168,248.72 is: 252,416.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,735.20 : 505,190.32 = 168,248.72 : x
  2. Step 2: Convert to fraction form
    336,735.20/505,190.32 = 168,248.72/x
  3. Step 3: Cross multiply
    336,735.20x = 505,190.32 × 168,248.72
  4. Step 4: Simplify right side
    336,735.20x = 84,997,624,117.90
  5. Step 5: Solve for x
    x = 84,997,624,117.90/336,735.20
  6. Step 6: Final answer
    x = 252,416.81

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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.