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Finding the Third Proportional to 970 and 1,910

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Solution

The third proportional to 970 and 1,910 is: 3,760.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    970 : 1,910 = 1,910 : x
  2. Step 2: Convert to fraction form
    970/1,910 = 1,910/x
  3. Step 3: Cross multiply
    970x = 1,910 × 1,910
  4. Step 4: Simplify right side
    970x = 3,648,100
  5. Step 5: Solve for x
    x = 3,648,100/970
  6. Step 6: Final answer
    x = 3,760.93

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.