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Finding the Third Proportional to 965 and 1,070

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Solution

The third proportional to 965 and 1,070 is: 1,186.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    965 : 1,070 = 1,070 : x
  2. Step 2: Convert to fraction form
    965/1,070 = 1,070/x
  3. Step 3: Cross multiply
    965x = 1,070 × 1,070
  4. Step 4: Simplify right side
    965x = 1,144,900
  5. Step 5: Solve for x
    x = 1,144,900/965
  6. Step 6: Final answer
    x = 1,186.42

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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.