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Finding the Fourth Proportional to 329,617.72, 494,440.96 and 161,279.79

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Solution

The fourth proportional to 329,617.72, 494,440.96 and 161,279.79 is: 241,926.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,617.72 : 494,440.96 = 161,279.79 : x
  2. Step 2: Convert to fraction form
    329,617.72/494,440.96 = 161,279.79/x
  3. Step 3: Cross multiply
    329,617.72x = 494,440.96 × 161,279.79
  4. Step 4: Simplify right side
    329,617.72x = 79,743,334,196.20
  5. Step 5: Solve for x
    x = 79,743,334,196.20/329,617.72
  6. Step 6: Final answer
    x = 241,926.72

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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.