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Finding the Third Proportional to 3,152 and 4,720

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Solution

The third proportional to 3,152 and 4,720 is: 7,068.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,152 : 4,720 = 4,720 : x
  2. Step 2: Convert to fraction form
    3,152/4,720 = 4,720/x
  3. Step 3: Cross multiply
    3,152x = 4,720 × 4,720
  4. Step 4: Simplify right side
    3,152x = 22,278,400
  5. Step 5: Solve for x
    x = 22,278,400/3,152
  6. Step 6: Final answer
    x = 7,068.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.