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Finding the Fourth Proportional to 73,956.70, 110,935.05 and 61,490.80

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Solution

The fourth proportional to 73,956.70, 110,935.05 and 61,490.80 is: 92,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,956.70 : 110,935.05 = 61,490.80 : x
  2. Step 2: Convert to fraction form
    73,956.70/110,935.05 = 61,490.80/x
  3. Step 3: Cross multiply
    73,956.70x = 110,935.05 × 61,490.80
  4. Step 4: Simplify right side
    73,956.70x = 6,821,484,972.54
  5. Step 5: Solve for x
    x = 6,821,484,972.54/73,956.70
  6. Step 6: Final answer
    x = 92,236.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.