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Finding the Fourth Proportional to 84,717.88, 116,910.30 and 48,418.72

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Solution

The fourth proportional to 84,717.88, 116,910.30 and 48,418.72 is: 66,817.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,717.88 : 116,910.30 = 48,418.72 : x
  2. Step 2: Convert to fraction form
    84,717.88/116,910.30 = 48,418.72/x
  3. Step 3: Cross multiply
    84,717.88x = 116,910.30 × 48,418.72
  4. Step 4: Simplify right side
    84,717.88x = 5,660,647,080.82
  5. Step 5: Solve for x
    x = 5,660,647,080.82/84,717.88
  6. Step 6: Final answer
    x = 66,817.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.