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Finding the Fourth Proportional to 653,616,003.80, 980,424,005.70 and 603,731,408.60

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Solution

The fourth proportional to 653,616,003.80, 980,424,005.70 and 603,731,408.60 is: 905,597,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,616,003.80 : 980,424,005.70 = 603,731,408.60 : x
  2. Step 2: Convert to fraction form
    653,616,003.80/980,424,005.70 = 603,731,408.60/x
  3. Step 3: Cross multiply
    653,616,003.80x = 980,424,005.70 × 603,731,408.60
  4. Step 4: Simplify right side
    653,616,003.80x = 591,912,765,986,515,456
  5. Step 5: Solve for x
    x = 591,912,765,986,515,456/653,616,003.80
  6. Step 6: Final answer
    x = 905,597,112.90

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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.