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Finding the Fourth Proportional to 17,914.29, 26,841.51 and 12,640.58

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Solution

The fourth proportional to 17,914.29, 26,841.51 and 12,640.58 is: 18,939.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,914.29 : 26,841.51 = 12,640.58 : x
  2. Step 2: Convert to fraction form
    17,914.29/26,841.51 = 12,640.58/x
  3. Step 3: Cross multiply
    17,914.29x = 26,841.51 × 12,640.58
  4. Step 4: Simplify right side
    17,914.29x = 339,292,321.58
  5. Step 5: Solve for x
    x = 339,292,321.58/17,914.29
  6. Step 6: Final answer
    x = 18,939.76

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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.