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Finding the Fourth Proportional to 329,991.12, 494,322.48 and 228,906.72

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Solution

The fourth proportional to 329,991.12, 494,322.48 and 228,906.72 is: 342,899.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,991.12 : 494,322.48 = 228,906.72 : x
  2. Step 2: Convert to fraction form
    329,991.12/494,322.48 = 228,906.72/x
  3. Step 3: Cross multiply
    329,991.12x = 494,322.48 × 228,906.72
  4. Step 4: Simplify right side
    329,991.12x = 113,153,737,519.07
  5. Step 5: Solve for x
    x = 113,153,737,519.07/329,991.12
  6. Step 6: Final answer
    x = 342,899.34

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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.