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Finding the Third Proportional to 28,360 and 41,721

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Solution

The third proportional to 28,360 and 41,721 is: 61,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,360 : 41,721 = 41,721 : x
  2. Step 2: Convert to fraction form
    28,360/41,721 = 41,721/x
  3. Step 3: Cross multiply
    28,360x = 41,721 × 41,721
  4. Step 4: Simplify right side
    28,360x = 1,740,641,841
  5. Step 5: Solve for x
    x = 1,740,641,841/28,360
  6. Step 6: Final answer
    x = 61,376.65

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.