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Finding the Third Proportional to 622.94 and 907.38

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Solution

The third proportional to 622.94 and 907.38 is: 1,321.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.94 : 907.38 = 907.38 : x
  2. Step 2: Convert to fraction form
    622.94/907.38 = 907.38/x
  3. Step 3: Cross multiply
    622.94x = 907.38 × 907.38
  4. Step 4: Simplify right side
    622.94x = 823,329.39
  5. Step 5: Solve for x
    x = 823,329.39/622.94
  6. Step 6: Final answer
    x = 1,321.69

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.