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Finding the Fourth Proportional to 45,555,989.70, 68,339,978.55 and 16,822,308.90

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Solution

The fourth proportional to 45,555,989.70, 68,339,978.55 and 16,822,308.90 is: 25,235,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,555,989.70 : 68,339,978.55 = 16,822,308.90 : x
  2. Step 2: Convert to fraction form
    45,555,989.70/68,339,978.55 = 16,822,308.90/x
  3. Step 3: Cross multiply
    45,555,989.70x = 68,339,978.55 × 16,822,308.90
  4. Step 4: Simplify right side
    45,555,989.70x = 1,149,636,229,387,474
  5. Step 5: Solve for x
    x = 1,149,636,229,387,474/45,555,989.70
  6. Step 6: Final answer
    x = 25,235,676.73

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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.