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Finding the Fourth Proportional to 19,668,793.80, 29,503,190.70 and 19,542,822.60

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Solution

The fourth proportional to 19,668,793.80, 29,503,190.70 and 19,542,822.60 is: 29,314,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668,793.80 : 29,503,190.70 = 19,542,822.60 : x
  2. Step 2: Convert to fraction form
    19,668,793.80/29,503,190.70 = 19,542,822.60/x
  3. Step 3: Cross multiply
    19,668,793.80x = 29,503,190.70 × 19,542,822.60
  4. Step 4: Simplify right side
    19,668,793.80x = 576,575,621,984,069.88
  5. Step 5: Solve for x
    x = 576,575,621,984,069.88/19,668,793.80
  6. Step 6: Final answer
    x = 29,314,233.90

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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.