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Finding the Fourth Proportional to 53,897,793.80, 80,850,189.90 and 28,388,625.80

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Solution

The fourth proportional to 53,897,793.80, 80,850,189.90 and 28,388,625.80 is: 42,584,781.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,897,793.80 : 80,850,189.90 = 28,388,625.80 : x
  2. Step 2: Convert to fraction form
    53,897,793.80/80,850,189.90 = 28,388,625.80/x
  3. Step 3: Cross multiply
    53,897,793.80x = 80,850,189.90 × 28,388,625.80
  4. Step 4: Simplify right side
    53,897,793.80x = 2,295,225,786,930,039.50
  5. Step 5: Solve for x
    x = 2,295,225,786,930,039.50/53,897,793.80
  6. Step 6: Final answer
    x = 42,584,781.77

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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.