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Finding the Fourth Proportional to 79,043.36, 109,080.70 and 43,232.60

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Solution

The fourth proportional to 79,043.36, 109,080.70 and 43,232.60 is: 59,661.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,043.36 : 109,080.70 = 43,232.60 : x
  2. Step 2: Convert to fraction form
    79,043.36/109,080.70 = 43,232.60/x
  3. Step 3: Cross multiply
    79,043.36x = 109,080.70 × 43,232.60
  4. Step 4: Simplify right side
    79,043.36x = 4,715,842,435.44
  5. Step 5: Solve for x
    x = 4,715,842,435.44/79,043.36
  6. Step 6: Final answer
    x = 59,661.47

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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.