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Finding the Fourth Proportional to 75,311,994.60, 112,967,991.90 and 20,724,474.60

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Solution

The fourth proportional to 75,311,994.60, 112,967,991.90 and 20,724,474.60 is: 31,086,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,311,994.60 : 112,967,991.90 = 20,724,474.60 : x
  2. Step 2: Convert to fraction form
    75,311,994.60/112,967,991.90 = 20,724,474.60/x
  3. Step 3: Cross multiply
    75,311,994.60x = 112,967,991.90 × 20,724,474.60
  4. Step 4: Simplify right side
    75,311,994.60x = 2,341,202,278,744,556
  5. Step 5: Solve for x
    x = 2,341,202,278,744,556/75,311,994.60
  6. Step 6: Final answer
    x = 31,086,711.90

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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.