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Finding the Fourth Proportional to 28,987,930.20, 43,481,895.30 and 28,987,930.20

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Solution

The fourth proportional to 28,987,930.20, 43,481,895.30 and 28,987,930.20 is: 43,481,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987,930.20 : 43,481,895.30 = 28,987,930.20 : x
  2. Step 2: Convert to fraction form
    28,987,930.20/43,481,895.30 = 28,987,930.20/x
  3. Step 3: Cross multiply
    28,987,930.20x = 43,481,895.30 × 28,987,930.20
  4. Step 4: Simplify right side
    28,987,930.20x = 1,260,450,145,920,108
  5. Step 5: Solve for x
    x = 1,260,450,145,920,108/28,987,930.20
  6. Step 6: Final answer
    x = 43,481,895.30

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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.