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Finding the Fourth Proportional to 79,519.61, 109,737.30 and 43,713.29

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Solution

The fourth proportional to 79,519.61, 109,737.30 and 43,713.29 is: 60,324.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,519.61 : 109,737.30 = 43,713.29 : x
  2. Step 2: Convert to fraction form
    79,519.61/109,737.30 = 43,713.29/x
  3. Step 3: Cross multiply
    79,519.61x = 109,737.30 × 43,713.29
  4. Step 4: Simplify right side
    79,519.61x = 4,796,977,870.03
  5. Step 5: Solve for x
    x = 4,796,977,870.03/79,519.61
  6. Step 6: Final answer
    x = 60,324.47

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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.