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Finding the Fourth Proportional to 168,803.42, 252,923.97 and 118,778.41

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Solution

The fourth proportional to 168,803.42, 252,923.97 and 118,778.41 is: 177,969.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,803.42 : 252,923.97 = 118,778.41 : x
  2. Step 2: Convert to fraction form
    168,803.42/252,923.97 = 118,778.41/x
  3. Step 3: Cross multiply
    168,803.42x = 252,923.97 × 118,778.41
  4. Step 4: Simplify right side
    168,803.42x = 30,041,905,742.87
  5. Step 5: Solve for x
    x = 30,041,905,742.87/168,803.42
  6. Step 6: Final answer
    x = 177,969.77

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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.