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Finding the Fourth Proportional to 98,791.65, 136,332.30 and 53,469.62

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Solution

The fourth proportional to 98,791.65, 136,332.30 and 53,469.62 is: 73,787.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,791.65 : 136,332.30 = 53,469.62 : x
  2. Step 2: Convert to fraction form
    98,791.65/136,332.30 = 53,469.62/x
  3. Step 3: Cross multiply
    98,791.65x = 136,332.30 × 53,469.62
  4. Step 4: Simplify right side
    98,791.65x = 7,289,635,325.72
  5. Step 5: Solve for x
    x = 7,289,635,325.72/98,791.65
  6. Step 6: Final answer
    x = 73,787.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.