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Finding the Third Proportional to 43,918 and 66,263

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Solution

The third proportional to 43,918 and 66,263 is: 99,976.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,918 : 66,263 = 66,263 : x
  2. Step 2: Convert to fraction form
    43,918/66,263 = 66,263/x
  3. Step 3: Cross multiply
    43,918x = 66,263 × 66,263
  4. Step 4: Simplify right side
    43,918x = 4,390,785,169
  5. Step 5: Solve for x
    x = 4,390,785,169/43,918
  6. Step 6: Final answer
    x = 99,976.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.