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Finding the Third Proportional to 7,964 and 11,130

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Solution

The third proportional to 7,964 and 11,130 is: 15,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964 : 11,130 = 11,130 : x
  2. Step 2: Convert to fraction form
    7,964/11,130 = 11,130/x
  3. Step 3: Cross multiply
    7,964x = 11,130 × 11,130
  4. Step 4: Simplify right side
    7,964x = 123,876,900
  5. Step 5: Solve for x
    x = 123,876,900/7,964
  6. Step 6: Final answer
    x = 15,554.61

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.