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Finding the Fourth Proportional to 12,706.72, 17,529.39 and 8,231.92

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Solution

The fourth proportional to 12,706.72, 17,529.39 and 8,231.92 is: 11,356.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,706.72 : 17,529.39 = 8,231.92 : x
  2. Step 2: Convert to fraction form
    12,706.72/17,529.39 = 8,231.92/x
  3. Step 3: Cross multiply
    12,706.72x = 17,529.39 × 8,231.92
  4. Step 4: Simplify right side
    12,706.72x = 144,300,536.13
  5. Step 5: Solve for x
    x = 144,300,536.13/12,706.72
  6. Step 6: Final answer
    x = 11,356.24

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