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Finding the Third Proportional to 916.13 and 994.13

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Solution

The third proportional to 916.13 and 994.13 is: 1,078.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.13 : 994.13 = 994.13 : x
  2. Step 2: Convert to fraction form
    916.13/994.13 = 994.13/x
  3. Step 3: Cross multiply
    916.13x = 994.13 × 994.13
  4. Step 4: Simplify right side
    916.13x = 988,284.52
  5. Step 5: Solve for x
    x = 988,284.52/916.13
  6. Step 6: Final answer
    x = 1,078.77

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.