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Finding the Third Proportional to 15,630 and 33,310

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Solution

The third proportional to 15,630 and 33,310 is: 70,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630 : 33,310 = 33,310 : x
  2. Step 2: Convert to fraction form
    15,630/33,310 = 33,310/x
  3. Step 3: Cross multiply
    15,630x = 33,310 × 33,310
  4. Step 4: Simplify right side
    15,630x = 1,109,556,100
  5. Step 5: Solve for x
    x = 1,109,556,100/15,630
  6. Step 6: Final answer
    x = 70,988.87

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.