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Finding the Fourth Proportional to 79,506.16, 109,694.54 and 47,663.44

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Solution

The fourth proportional to 79,506.16, 109,694.54 and 47,663.44 is: 65,761.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,506.16 : 109,694.54 = 47,663.44 : x
  2. Step 2: Convert to fraction form
    79,506.16/109,694.54 = 47,663.44/x
  3. Step 3: Cross multiply
    79,506.16x = 109,694.54 × 47,663.44
  4. Step 4: Simplify right side
    79,506.16x = 5,228,419,125.62
  5. Step 5: Solve for x
    x = 5,228,419,125.62/79,506.16
  6. Step 6: Final answer
    x = 65,761.18

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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.