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Finding the Third Proportional to 11,931 and 14,091

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Solution

The third proportional to 11,931 and 14,091 is: 16,642.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931 : 14,091 = 14,091 : x
  2. Step 2: Convert to fraction form
    11,931/14,091 = 14,091/x
  3. Step 3: Cross multiply
    11,931x = 14,091 × 14,091
  4. Step 4: Simplify right side
    11,931x = 198,556,281
  5. Step 5: Solve for x
    x = 198,556,281/11,931
  6. Step 6: Final answer
    x = 16,642.05

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.