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Finding the Fourth Proportional to 16,686.06, 25,034.22 and 8,889

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Solution

The fourth proportional to 16,686.06, 25,034.22 and 8,889 is: 13,336.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,686.06 : 25,034.22 = 8,889 : x
  2. Step 2: Convert to fraction form
    16,686.06/25,034.22 = 8,889/x
  3. Step 3: Cross multiply
    16,686.06x = 25,034.22 × 8,889
  4. Step 4: Simplify right side
    16,686.06x = 222,529,181.58
  5. Step 5: Solve for x
    x = 222,529,181.58/16,686.06
  6. Step 6: Final answer
    x = 13,336.23

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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.