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Finding the Third Proportional to 25,905 and 39,132

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Solution

The third proportional to 25,905 and 39,132 is: 59,112.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,905 : 39,132 = 39,132 : x
  2. Step 2: Convert to fraction form
    25,905/39,132 = 39,132/x
  3. Step 3: Cross multiply
    25,905x = 39,132 × 39,132
  4. Step 4: Simplify right side
    25,905x = 1,531,313,424
  5. Step 5: Solve for x
    x = 1,531,313,424/25,905
  6. Step 6: Final answer
    x = 59,112.66

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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.