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Finding the Third Proportional to 43,010 and 66,431

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Solution

The third proportional to 43,010 and 66,431 is: 102,605.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,010 : 66,431 = 66,431 : x
  2. Step 2: Convert to fraction form
    43,010/66,431 = 66,431/x
  3. Step 3: Cross multiply
    43,010x = 66,431 × 66,431
  4. Step 4: Simplify right side
    43,010x = 4,413,077,761
  5. Step 5: Solve for x
    x = 4,413,077,761/43,010
  6. Step 6: Final answer
    x = 102,605.85

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.