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Finding the Third Proportional to 15,360 and 33,600

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Solution

The third proportional to 15,360 and 33,600 is: 73,500

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,360 : 33,600 = 33,600 : x
  2. Step 2: Convert to fraction form
    15,360/33,600 = 33,600/x
  3. Step 3: Cross multiply
    15,360x = 33,600 × 33,600
  4. Step 4: Simplify right side
    15,360x = 1,128,960,000
  5. Step 5: Solve for x
    x = 1,128,960,000/15,360
  6. Step 6: Final answer
    x = 73,500

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.