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Finding the Fourth Proportional to 79,276.61, 109,400.94 and 43,466.54

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Solution

The fourth proportional to 79,276.61, 109,400.94 and 43,466.54 is: 59,983.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,276.61 : 109,400.94 = 43,466.54 : x
  2. Step 2: Convert to fraction form
    79,276.61/109,400.94 = 43,466.54/x
  3. Step 3: Cross multiply
    79,276.61x = 109,400.94 × 43,466.54
  4. Step 4: Simplify right side
    79,276.61x = 4,755,279,787.54
  5. Step 5: Solve for x
    x = 4,755,279,787.54/79,276.61
  6. Step 6: Final answer
    x = 59,983.39

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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.