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Finding the Fourth Proportional to 73,993,811.70, 110,990,717.55 and 72,718,353.30

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Solution

The fourth proportional to 73,993,811.70, 110,990,717.55 and 72,718,353.30 is: 109,077,529.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,993,811.70 : 110,990,717.55 = 72,718,353.30 : x
  2. Step 2: Convert to fraction form
    73,993,811.70/110,990,717.55 = 72,718,353.30/x
  3. Step 3: Cross multiply
    73,993,811.70x = 110,990,717.55 × 72,718,353.30
  4. Step 4: Simplify right side
    73,993,811.70x = 8,071,062,211,821,410
  5. Step 5: Solve for x
    x = 8,071,062,211,821,410/73,993,811.70
  6. Step 6: Final answer
    x = 109,077,529.95

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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.