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Finding the Fourth Proportional to 299,559,829.80, 449,339,744.70 and 247,603,708.20

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Solution

The fourth proportional to 299,559,829.80, 449,339,744.70 and 247,603,708.20 is: 371,405,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,559,829.80 : 449,339,744.70 = 247,603,708.20 : x
  2. Step 2: Convert to fraction form
    299,559,829.80/449,339,744.70 = 247,603,708.20/x
  3. Step 3: Cross multiply
    299,559,829.80x = 449,339,744.70 × 247,603,708.20
  4. Step 4: Simplify right side
    299,559,829.80x = 111,258,187,029,361,296
  5. Step 5: Solve for x
    x = 111,258,187,029,361,296/299,559,829.80
  6. Step 6: Final answer
    x = 371,405,562.30

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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.