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Finding the Fourth Proportional to 79,630.62, 109,849.14 and 55,704.84

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Solution

The fourth proportional to 79,630.62, 109,849.14 and 55,704.84 is: 76,843.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,630.62 : 109,849.14 = 55,704.84 : x
  2. Step 2: Convert to fraction form
    79,630.62/109,849.14 = 55,704.84/x
  3. Step 3: Cross multiply
    79,630.62x = 109,849.14 × 55,704.84
  4. Step 4: Simplify right side
    79,630.62x = 6,119,128,767.84
  5. Step 5: Solve for x
    x = 6,119,128,767.84/79,630.62
  6. Step 6: Final answer
    x = 76,843.92

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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.