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Finding the Third Proportional to 938.75 and 1,043

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Solution

The third proportional to 938.75 and 1,043 is: 1,158.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.75 : 1,043 = 1,043 : x
  2. Step 2: Convert to fraction form
    938.75/1,043 = 1,043/x
  3. Step 3: Cross multiply
    938.75x = 1,043 × 1,043
  4. Step 4: Simplify right side
    938.75x = 1,087,849
  5. Step 5: Solve for x
    x = 1,087,849/938.75
  6. Step 6: Final answer
    x = 1,158.83

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.