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Finding the Fourth Proportional to 218,068.66, 327,105.42 and 68,302.90

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Solution

The fourth proportional to 218,068.66, 327,105.42 and 68,302.90 is: 102,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,068.66 : 327,105.42 = 68,302.90 : x
  2. Step 2: Convert to fraction form
    218,068.66/327,105.42 = 68,302.90/x
  3. Step 3: Cross multiply
    218,068.66x = 327,105.42 × 68,302.90
  4. Step 4: Simplify right side
    218,068.66x = 22,342,248,791.72
  5. Step 5: Solve for x
    x = 22,342,248,791.72/218,068.66
  6. Step 6: Final answer
    x = 102,455.11

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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.