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Finding the Fourth Proportional to 199,298.03, 298,994.21 and 79,361.93

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Solution

The fourth proportional to 199,298.03, 298,994.21 and 79,361.93 is: 119,061.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,298.03 : 298,994.21 = 79,361.93 : x
  2. Step 2: Convert to fraction form
    199,298.03/298,994.21 = 79,361.93/x
  3. Step 3: Cross multiply
    199,298.03x = 298,994.21 × 79,361.93
  4. Step 4: Simplify right side
    199,298.03x = 23,728,755,672.64
  5. Step 5: Solve for x
    x = 23,728,755,672.64/199,298.03
  6. Step 6: Final answer
    x = 119,061.67

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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.