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Finding the Fourth Proportional to 17,431.66, 26,149.11 and 10,021.78

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Solution

The fourth proportional to 17,431.66, 26,149.11 and 10,021.78 is: 15,033.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,431.66 : 26,149.11 = 10,021.78 : x
  2. Step 2: Convert to fraction form
    17,431.66/26,149.11 = 10,021.78/x
  3. Step 3: Cross multiply
    17,431.66x = 26,149.11 × 10,021.78
  4. Step 4: Simplify right side
    17,431.66x = 262,060,627.62
  5. Step 5: Solve for x
    x = 262,060,627.62/17,431.66
  6. Step 6: Final answer
    x = 15,033.60

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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.