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Finding the Third Proportional to 53,664 and 78,848

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Solution

The third proportional to 53,664 and 78,848 is: 115,850.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,664 : 78,848 = 78,848 : x
  2. Step 2: Convert to fraction form
    53,664/78,848 = 78,848/x
  3. Step 3: Cross multiply
    53,664x = 78,848 × 78,848
  4. Step 4: Simplify right side
    53,664x = 6,217,007,104
  5. Step 5: Solve for x
    x = 6,217,007,104/53,664
  6. Step 6: Final answer
    x = 115,850.61

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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.