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Finding the Fourth Proportional to 209,953,794.80, 314,930,692.20 and 197,188,713.20

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Solution

The fourth proportional to 209,953,794.80, 314,930,692.20 and 197,188,713.20 is: 295,783,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953,794.80 : 314,930,692.20 = 197,188,713.20 : x
  2. Step 2: Convert to fraction form
    209,953,794.80/314,930,692.20 = 197,188,713.20/x
  3. Step 3: Cross multiply
    209,953,794.80x = 314,930,692.20 × 197,188,713.20
  4. Step 4: Simplify right side
    209,953,794.80x = 62,100,777,942,103,272
  5. Step 5: Solve for x
    x = 62,100,777,942,103,272/209,953,794.80
  6. Step 6: Final answer
    x = 295,783,069.80

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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.