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Finding the Fourth Proportional to 12,568.25, 17,344.19 and 6,979.25

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Solution

The fourth proportional to 12,568.25, 17,344.19 and 6,979.25 is: 9,631.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,568.25 : 17,344.19 = 6,979.25 : x
  2. Step 2: Convert to fraction form
    12,568.25/17,344.19 = 6,979.25/x
  3. Step 3: Cross multiply
    12,568.25x = 17,344.19 × 6,979.25
  4. Step 4: Simplify right side
    12,568.25x = 121,049,438.06
  5. Step 5: Solve for x
    x = 121,049,438.06/12,568.25
  6. Step 6: Final answer
    x = 9,631.37

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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.