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Finding the Fourth Proportional to 358,172.11, 494,278.65 and 197,039.41

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Solution

The fourth proportional to 358,172.11, 494,278.65 and 197,039.41 is: 271,915.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,172.11 : 494,278.65 = 197,039.41 : x
  2. Step 2: Convert to fraction form
    358,172.11/494,278.65 = 197,039.41/x
  3. Step 3: Cross multiply
    358,172.11x = 494,278.65 × 197,039.41
  4. Step 4: Simplify right side
    358,172.11x = 97,392,373,571.60
  5. Step 5: Solve for x
    x = 97,392,373,571.60/358,172.11
  6. Step 6: Final answer
    x = 271,915.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.