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Finding the Fourth Proportional to 92,964.79, 128,286.49 and 52,679.03

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Solution

The fourth proportional to 92,964.79, 128,286.49 and 52,679.03 is: 72,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,964.79 : 128,286.49 = 52,679.03 : x
  2. Step 2: Convert to fraction form
    92,964.79/128,286.49 = 52,679.03/x
  3. Step 3: Cross multiply
    92,964.79x = 128,286.49 × 52,679.03
  4. Step 4: Simplify right side
    92,964.79x = 6,758,007,591.91
  5. Step 5: Solve for x
    x = 6,758,007,591.91/92,964.79
  6. Step 6: Final answer
    x = 72,694.27

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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.