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Finding the Third Proportional to 920.25 and 1,948.38

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Solution

The third proportional to 920.25 and 1,948.38 is: 4,125.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.25 : 1,948.38 = 1,948.38 : x
  2. Step 2: Convert to fraction form
    920.25/1,948.38 = 1,948.38/x
  3. Step 3: Cross multiply
    920.25x = 1,948.38 × 1,948.38
  4. Step 4: Simplify right side
    920.25x = 3,796,165.14
  5. Step 5: Solve for x
    x = 3,796,165.14/920.25
  6. Step 6: Final answer
    x = 4,125.15

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.