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Finding the Third Proportional to 39,000 and 55,732

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Solution

The third proportional to 39,000 and 55,732 is: 79,642.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,000 : 55,732 = 55,732 : x
  2. Step 2: Convert to fraction form
    39,000/55,732 = 55,732/x
  3. Step 3: Cross multiply
    39,000x = 55,732 × 55,732
  4. Step 4: Simplify right side
    39,000x = 3,106,055,824
  5. Step 5: Solve for x
    x = 3,106,055,824/39,000
  6. Step 6: Final answer
    x = 79,642.46

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.