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Finding the Third Proportional to 4,020 and 5,750

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Solution

The third proportional to 4,020 and 5,750 is: 8,224.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,020 : 5,750 = 5,750 : x
  2. Step 2: Convert to fraction form
    4,020/5,750 = 5,750/x
  3. Step 3: Cross multiply
    4,020x = 5,750 × 5,750
  4. Step 4: Simplify right side
    4,020x = 33,062,500
  5. Step 5: Solve for x
    x = 33,062,500/4,020
  6. Step 6: Final answer
    x = 8,224.50

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.