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Finding the Third Proportional to 1,135.91 and 2,445.81

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Solution

The third proportional to 1,135.91 and 2,445.81 is: 5,266.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.91 : 2,445.81 = 2,445.81 : x
  2. Step 2: Convert to fraction form
    1,135.91/2,445.81 = 2,445.81/x
  3. Step 3: Cross multiply
    1,135.91x = 2,445.81 × 2,445.81
  4. Step 4: Simplify right side
    1,135.91x = 5,981,998.79
  5. Step 5: Solve for x
    x = 5,981,998.79/1,135.91
  6. Step 6: Final answer
    x = 5,266.28

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.