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Finding the Fourth Proportional to 79,617.09, 109,874.16 and 43,811.04

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Solution

The fourth proportional to 79,617.09, 109,874.16 and 43,811.04 is: 60,460.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,617.09 : 109,874.16 = 43,811.04 : x
  2. Step 2: Convert to fraction form
    79,617.09/109,874.16 = 43,811.04/x
  3. Step 3: Cross multiply
    79,617.09x = 109,874.16 × 43,811.04
  4. Step 4: Simplify right side
    79,617.09x = 4,813,701,218.73
  5. Step 5: Solve for x
    x = 4,813,701,218.73/79,617.09
  6. Step 6: Final answer
    x = 60,460.65

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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.