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Finding the Fourth Proportional to 17,874.46, 26,811.69 and 7,478.92

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Solution

The fourth proportional to 17,874.46, 26,811.69 and 7,478.92 is: 11,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,874.46 : 26,811.69 = 7,478.92 : x
  2. Step 2: Convert to fraction form
    17,874.46/26,811.69 = 7,478.92/x
  3. Step 3: Cross multiply
    17,874.46x = 26,811.69 × 7,478.92
  4. Step 4: Simplify right side
    17,874.46x = 200,522,484.57
  5. Step 5: Solve for x
    x = 200,522,484.57/17,874.46
  6. Step 6: Final answer
    x = 11,218.38

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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.