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Finding the Fourth Proportional to 16,811.78, 23,200.07 and 9,257.96

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Solution

The fourth proportional to 16,811.78, 23,200.07 and 9,257.96 is: 12,775.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,811.78 : 23,200.07 = 9,257.96 : x
  2. Step 2: Convert to fraction form
    16,811.78/23,200.07 = 9,257.96/x
  3. Step 3: Cross multiply
    16,811.78x = 23,200.07 × 9,257.96
  4. Step 4: Simplify right side
    16,811.78x = 214,785,157.77
  5. Step 5: Solve for x
    x = 214,785,157.77/16,811.78
  6. Step 6: Final answer
    x = 12,775.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.