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Finding the Third Proportional to 53,328 and 84,336

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Solution

The third proportional to 53,328 and 84,336 is: 133,373.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,328 : 84,336 = 84,336 : x
  2. Step 2: Convert to fraction form
    53,328/84,336 = 84,336/x
  3. Step 3: Cross multiply
    53,328x = 84,336 × 84,336
  4. Step 4: Simplify right side
    53,328x = 7,112,560,896
  5. Step 5: Solve for x
    x = 7,112,560,896/53,328
  6. Step 6: Final answer
    x = 133,373.85

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.