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Finding the Third Proportional to 938.53 and 1,407.66

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Solution

The third proportional to 938.53 and 1,407.66 is: 2,111.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.53 : 1,407.66 = 1,407.66 : x
  2. Step 2: Convert to fraction form
    938.53/1,407.66 = 1,407.66/x
  3. Step 3: Cross multiply
    938.53x = 1,407.66 × 1,407.66
  4. Step 4: Simplify right side
    938.53x = 1,981,496.12
  5. Step 5: Solve for x
    x = 1,981,496.12/938.53
  6. Step 6: Final answer
    x = 2,111.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.