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Finding the Fourth Proportional to 17,790.91, 26,685.76 and 8,435.41

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Solution

The fourth proportional to 17,790.91, 26,685.76 and 8,435.41 is: 12,652.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,790.91 : 26,685.76 = 8,435.41 : x
  2. Step 2: Convert to fraction form
    17,790.91/26,685.76 = 8,435.41/x
  3. Step 3: Cross multiply
    17,790.91x = 26,685.76 × 8,435.41
  4. Step 4: Simplify right side
    17,790.91x = 225,105,326.76
  5. Step 5: Solve for x
    x = 225,105,326.76/17,790.91
  6. Step 6: Final answer
    x = 12,652.83

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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.