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Finding the Fourth Proportional to 16,921.70, 23,352.09 and 9,367.82

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Solution

The fourth proportional to 16,921.70, 23,352.09 and 9,367.82 is: 12,927.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.70 : 23,352.09 = 9,367.82 : x
  2. Step 2: Convert to fraction form
    16,921.70/23,352.09 = 9,367.82/x
  3. Step 3: Cross multiply
    16,921.70x = 23,352.09 × 9,367.82
  4. Step 4: Simplify right side
    16,921.70x = 218,758,175.74
  5. Step 5: Solve for x
    x = 218,758,175.74/16,921.70
  6. Step 6: Final answer
    x = 12,927.67

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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.