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Finding the Fourth Proportional to 102,516.80, 153,791.04 and 43,352.80

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Solution

The fourth proportional to 102,516.80, 153,791.04 and 43,352.80 is: 65,035.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,516.80 : 153,791.04 = 43,352.80 : x
  2. Step 2: Convert to fraction form
    102,516.80/153,791.04 = 43,352.80/x
  3. Step 3: Cross multiply
    102,516.80x = 153,791.04 × 43,352.80
  4. Step 4: Simplify right side
    102,516.80x = 6,667,272,198.91
  5. Step 5: Solve for x
    x = 6,667,272,198.91/102,516.80
  6. Step 6: Final answer
    x = 65,035.90

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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.