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Finding the Fourth Proportional to 18,461,314.20, 27,691,971.30 and 16,388,694.30

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Solution

The fourth proportional to 18,461,314.20, 27,691,971.30 and 16,388,694.30 is: 24,583,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461,314.20 : 27,691,971.30 = 16,388,694.30 : x
  2. Step 2: Convert to fraction form
    18,461,314.20/27,691,971.30 = 16,388,694.30/x
  3. Step 3: Cross multiply
    18,461,314.20x = 27,691,971.30 × 16,388,694.30
  4. Step 4: Simplify right side
    18,461,314.20x = 453,835,252,200,073.62
  5. Step 5: Solve for x
    x = 453,835,252,200,073.62/18,461,314.20
  6. Step 6: Final answer
    x = 24,583,041.45

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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.