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Finding the Fourth Proportional to 12,486.65, 17,233.99 and 8,016.05

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Solution

The fourth proportional to 12,486.65, 17,233.99 and 8,016.05 is: 11,063.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.65 : 17,233.99 = 8,016.05 : x
  2. Step 2: Convert to fraction form
    12,486.65/17,233.99 = 8,016.05/x
  3. Step 3: Cross multiply
    12,486.65x = 17,233.99 × 8,016.05
  4. Step 4: Simplify right side
    12,486.65x = 138,148,419.33
  5. Step 5: Solve for x
    x = 138,148,419.33/12,486.65
  6. Step 6: Final answer
    x = 11,063.69

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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.