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Finding the Fourth Proportional to 13,694.66, 18,900.07 and 8,029.64

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Solution

The fourth proportional to 13,694.66, 18,900.07 and 8,029.64 is: 11,081.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.66 : 18,900.07 = 8,029.64 : x
  2. Step 2: Convert to fraction form
    13,694.66/18,900.07 = 8,029.64/x
  3. Step 3: Cross multiply
    13,694.66x = 18,900.07 × 8,029.64
  4. Step 4: Simplify right side
    13,694.66x = 151,760,785.25
  5. Step 5: Solve for x
    x = 151,760,785.25/13,694.66
  6. Step 6: Final answer
    x = 11,081.75

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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.