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Finding the Fourth Proportional to 79,704.80, 109,992.64 and 43,894.72

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Solution

The fourth proportional to 79,704.80, 109,992.64 and 43,894.72 is: 60,574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,704.80 : 109,992.64 = 43,894.72 : x
  2. Step 2: Convert to fraction form
    79,704.80/109,992.64 = 43,894.72/x
  3. Step 3: Cross multiply
    79,704.80x = 109,992.64 × 43,894.72
  4. Step 4: Simplify right side
    79,704.80x = 4,828,096,134.86
  5. Step 5: Solve for x
    x = 4,828,096,134.86/79,704.80
  6. Step 6: Final answer
    x = 60,574.72

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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.