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Finding the Fourth Proportional to 79,721.97, 110,016.30 and 43,911.98

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Solution

The fourth proportional to 79,721.97, 110,016.30 and 43,911.98 is: 60,598.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,721.97 : 110,016.30 = 43,911.98 : x
  2. Step 2: Convert to fraction form
    79,721.97/110,016.30 = 43,911.98/x
  3. Step 3: Cross multiply
    79,721.97x = 110,016.30 × 43,911.98
  4. Step 4: Simplify right side
    79,721.97x = 4,831,033,592.42
  5. Step 5: Solve for x
    x = 4,831,033,592.42/79,721.97
  6. Step 6: Final answer
    x = 60,598.53

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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.