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Finding the Third Proportional to 34,415 and 76,200

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Solution

The third proportional to 34,415 and 76,200 is: 168,718.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,415 : 76,200 = 76,200 : x
  2. Step 2: Convert to fraction form
    34,415/76,200 = 76,200/x
  3. Step 3: Cross multiply
    34,415x = 76,200 × 76,200
  4. Step 4: Simplify right side
    34,415x = 5,806,440,000
  5. Step 5: Solve for x
    x = 5,806,440,000/34,415
  6. Step 6: Final answer
    x = 168,718.29

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.