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Finding the Third Proportional to 25,120 and 36,912

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Solution

The third proportional to 25,120 and 36,912 is: 54,239.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,120 : 36,912 = 36,912 : x
  2. Step 2: Convert to fraction form
    25,120/36,912 = 36,912/x
  3. Step 3: Cross multiply
    25,120x = 36,912 × 36,912
  4. Step 4: Simplify right side
    25,120x = 1,362,495,744
  5. Step 5: Solve for x
    x = 1,362,495,744/25,120
  6. Step 6: Final answer
    x = 54,239.48

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.