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Finding the Fourth Proportional to 79,660.93, 109,934.57 and 43,364.80

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Solution

The fourth proportional to 79,660.93, 109,934.57 and 43,364.80 is: 59,844.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.93 : 109,934.57 = 43,364.80 : x
  2. Step 2: Convert to fraction form
    79,660.93/109,934.57 = 43,364.80/x
  3. Step 3: Cross multiply
    79,660.93x = 109,934.57 × 43,364.80
  4. Step 4: Simplify right side
    79,660.93x = 4,767,289,874.64
  5. Step 5: Solve for x
    x = 4,767,289,874.64/79,660.93
  6. Step 6: Final answer
    x = 59,844.77

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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.