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Finding the Fourth Proportional to 12,231.63, 16,879.14 and 6,926.31

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Solution

The fourth proportional to 12,231.63, 16,879.14 and 6,926.31 is: 9,558.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.63 : 16,879.14 = 6,926.31 : x
  2. Step 2: Convert to fraction form
    12,231.63/16,879.14 = 6,926.31/x
  3. Step 3: Cross multiply
    12,231.63x = 16,879.14 × 6,926.31
  4. Step 4: Simplify right side
    12,231.63x = 116,910,156.17
  5. Step 5: Solve for x
    x = 116,910,156.17/12,231.63
  6. Step 6: Final answer
    x = 9,558.02

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1.5x scale

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.