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Finding the Fourth Proportional to 18,919.16, 26,111.04 and 11,467.16

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Solution

The fourth proportional to 18,919.16, 26,111.04 and 11,467.16 is: 15,826.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.16 : 26,111.04 = 11,467.16 : x
  2. Step 2: Convert to fraction form
    18,919.16/26,111.04 = 11,467.16/x
  3. Step 3: Cross multiply
    18,919.16x = 26,111.04 × 11,467.16
  4. Step 4: Simplify right side
    18,919.16x = 299,419,473.45
  5. Step 5: Solve for x
    x = 299,419,473.45/18,919.16
  6. Step 6: Final answer
    x = 15,826.26

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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.