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Finding the Fourth Proportional to 13,679.56, 18,882.48 and 8,016.13

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Solution

The fourth proportional to 13,679.56, 18,882.48 and 8,016.13 is: 11,065.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.56 : 18,882.48 = 8,016.13 : x
  2. Step 2: Convert to fraction form
    13,679.56/18,882.48 = 8,016.13/x
  3. Step 3: Cross multiply
    13,679.56x = 18,882.48 × 8,016.13
  4. Step 4: Simplify right side
    13,679.56x = 151,364,414.40
  5. Step 5: Solve for x
    x = 151,364,414.40/13,679.56
  6. Step 6: Final answer
    x = 11,065.01

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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.