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Finding the Fourth Proportional to 73,993,689.20, 110,990,533.80 and 72,718,230.80

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Solution

The fourth proportional to 73,993,689.20, 110,990,533.80 and 72,718,230.80 is: 109,077,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,993,689.20 : 110,990,533.80 = 72,718,230.80 : x
  2. Step 2: Convert to fraction form
    73,993,689.20/110,990,533.80 = 72,718,230.80/x
  3. Step 3: Cross multiply
    73,993,689.20x = 110,990,533.80 × 72,718,230.80
  4. Step 4: Simplify right side
    73,993,689.20x = 8,071,035,253,483,600
  5. Step 5: Solve for x
    x = 8,071,035,253,483,600/73,993,689.20
  6. Step 6: Final answer
    x = 109,077,346.20

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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.