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Finding the Fourth Proportional to 17,712.58, 26,568.84 and 12,149.06

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Solution

The fourth proportional to 17,712.58, 26,568.84 and 12,149.06 is: 18,223.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,712.58 : 26,568.84 = 12,149.06 : x
  2. Step 2: Convert to fraction form
    17,712.58/26,568.84 = 12,149.06/x
  3. Step 3: Cross multiply
    17,712.58x = 26,568.84 × 12,149.06
  4. Step 4: Simplify right side
    17,712.58x = 322,786,431.29
  5. Step 5: Solve for x
    x = 322,786,431.29/17,712.58
  6. Step 6: Final answer
    x = 18,223.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.