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Finding the Fourth Proportional to 18,668,826.20, 27,970,061.70 and 16,014,618.20

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Solution

The fourth proportional to 18,668,826.20, 27,970,061.70 and 16,014,618.20 is: 23,993,466.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668,826.20 : 27,970,061.70 = 16,014,618.20 : x
  2. Step 2: Convert to fraction form
    18,668,826.20/27,970,061.70 = 16,014,618.20/x
  3. Step 3: Cross multiply
    18,668,826.20x = 27,970,061.70 × 16,014,618.20
  4. Step 4: Simplify right side
    18,668,826.20x = 447,929,859,155,942.94
  5. Step 5: Solve for x
    x = 447,929,859,155,942.94/18,668,826.20
  6. Step 6: Final answer
    x = 23,993,466.67

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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.