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Finding the Third Proportional to 39,216 and 84,048

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Solution

The third proportional to 39,216 and 84,048 is: 180,132.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216 : 84,048 = 84,048 : x
  2. Step 2: Convert to fraction form
    39,216/84,048 = 84,048/x
  3. Step 3: Cross multiply
    39,216x = 84,048 × 84,048
  4. Step 4: Simplify right side
    39,216x = 7,064,066,304
  5. Step 5: Solve for x
    x = 7,064,066,304/39,216
  6. Step 6: Final answer
    x = 180,132.25

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.