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Finding the Fourth Proportional to 16,388,663.20, 24,582,994.80 and 10,431,440.80

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Solution

The fourth proportional to 16,388,663.20, 24,582,994.80 and 10,431,440.80 is: 15,647,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,388,663.20 : 24,582,994.80 = 10,431,440.80 : x
  2. Step 2: Convert to fraction form
    16,388,663.20/24,582,994.80 = 10,431,440.80/x
  3. Step 3: Cross multiply
    16,388,663.20x = 24,582,994.80 × 10,431,440.80
  4. Step 4: Simplify right side
    16,388,663.20x = 256,436,054,942,907.88
  5. Step 5: Solve for x
    x = 256,436,054,942,907.88/16,388,663.20
  6. Step 6: Final answer
    x = 15,647,161.20

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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.