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Finding the Third Proportional to 786.38 and 1,910.25

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Solution

The third proportional to 786.38 and 1,910.25 is: 4,640.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    786.38 : 1,910.25 = 1,910.25 : x
  2. Step 2: Convert to fraction form
    786.38/1,910.25 = 1,910.25/x
  3. Step 3: Cross multiply
    786.38x = 1,910.25 × 1,910.25
  4. Step 4: Simplify right side
    786.38x = 3,649,055.06
  5. Step 5: Solve for x
    x = 3,649,055.06/786.38
  6. Step 6: Final answer
    x = 4,640.35

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Why These Related Problems?

These problems maintain the same ratio (2.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.