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Finding the Third Proportional to 47,957 and 105,431

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Solution

The third proportional to 47,957 and 105,431 is: 231,784.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,957 : 105,431 = 105,431 : x
  2. Step 2: Convert to fraction form
    47,957/105,431 = 105,431/x
  3. Step 3: Cross multiply
    47,957x = 105,431 × 105,431
  4. Step 4: Simplify right side
    47,957x = 11,115,695,761
  5. Step 5: Solve for x
    x = 11,115,695,761/47,957
  6. Step 6: Final answer
    x = 231,784.64

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.