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Finding the Fourth Proportional to 18,530.24, 27,792.48 and 8,668.64

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Solution

The fourth proportional to 18,530.24, 27,792.48 and 8,668.64 is: 13,001.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.24 : 27,792.48 = 8,668.64 : x
  2. Step 2: Convert to fraction form
    18,530.24/27,792.48 = 8,668.64/x
  3. Step 3: Cross multiply
    18,530.24x = 27,792.48 × 8,668.64
  4. Step 4: Simplify right side
    18,530.24x = 240,923,003.83
  5. Step 5: Solve for x
    x = 240,923,003.83/18,530.24
  6. Step 6: Final answer
    x = 13,001.61

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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.