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Finding the Third Proportional to 28,068 and 43,791

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Solution

The third proportional to 28,068 and 43,791 is: 68,321.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,068 : 43,791 = 43,791 : x
  2. Step 2: Convert to fraction form
    28,068/43,791 = 43,791/x
  3. Step 3: Cross multiply
    28,068x = 43,791 × 43,791
  4. Step 4: Simplify right side
    28,068x = 1,917,651,681
  5. Step 5: Solve for x
    x = 1,917,651,681/28,068
  6. Step 6: Final answer
    x = 68,321.64

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.