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Finding the Fourth Proportional to 20,503,270.80, 30,754,906.20 and 20,503,270.80

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Solution

The fourth proportional to 20,503,270.80, 30,754,906.20 and 20,503,270.80 is: 30,754,906.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503,270.80 : 30,754,906.20 = 20,503,270.80 : x
  2. Step 2: Convert to fraction form
    20,503,270.80/30,754,906.20 = 20,503,270.80/x
  3. Step 3: Cross multiply
    20,503,270.80x = 30,754,906.20 × 20,503,270.80
  4. Step 4: Simplify right side
    20,503,270.80x = 630,576,170,247,199
  5. Step 5: Solve for x
    x = 630,576,170,247,199/20,503,270.80
  6. Step 6: Final answer
    x = 30,754,906.20

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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.