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Finding the Third Proportional to 42,206 and 66,832

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Solution

The third proportional to 42,206 and 66,832 is: 105,826.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,206 : 66,832 = 66,832 : x
  2. Step 2: Convert to fraction form
    42,206/66,832 = 66,832/x
  3. Step 3: Cross multiply
    42,206x = 66,832 × 66,832
  4. Step 4: Simplify right side
    42,206x = 4,466,516,224
  5. Step 5: Solve for x
    x = 4,466,516,224/42,206
  6. Step 6: Final answer
    x = 105,826.57

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.