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Finding the Fourth Proportional to 19,162.96, 26,440.90 and 11,203.64

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Solution

The fourth proportional to 19,162.96, 26,440.90 and 11,203.64 is: 15,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,162.96 : 26,440.90 = 11,203.64 : x
  2. Step 2: Convert to fraction form
    19,162.96/26,440.90 = 11,203.64/x
  3. Step 3: Cross multiply
    19,162.96x = 26,440.90 × 11,203.64
  4. Step 4: Simplify right side
    19,162.96x = 296,234,324.88
  5. Step 5: Solve for x
    x = 296,234,324.88/19,162.96
  6. Step 6: Final answer
    x = 15,458.69

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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.