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Finding the Fourth Proportional to 79,653.85, 109,921.46 and 43,843.10

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Solution

The fourth proportional to 79,653.85, 109,921.46 and 43,843.10 is: 60,503.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,653.85 : 109,921.46 = 43,843.10 : x
  2. Step 2: Convert to fraction form
    79,653.85/109,921.46 = 43,843.10/x
  3. Step 3: Cross multiply
    79,653.85x = 109,921.46 × 43,843.10
  4. Step 4: Simplify right side
    79,653.85x = 4,819,296,794.10
  5. Step 5: Solve for x
    x = 4,819,296,794.10/79,653.85
  6. Step 6: Final answer
    x = 60,503.00

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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.