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Finding the Fourth Proportional to 330,665.72, 495,980.82 and 193,964.92

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Solution

The fourth proportional to 330,665.72, 495,980.82 and 193,964.92 is: 290,936.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,665.72 : 495,980.82 = 193,964.92 : x
  2. Step 2: Convert to fraction form
    330,665.72/495,980.82 = 193,964.92/x
  3. Step 3: Cross multiply
    330,665.72x = 495,980.82 × 193,964.92
  4. Step 4: Simplify right side
    330,665.72x = 96,202,880,072.83
  5. Step 5: Solve for x
    x = 96,202,880,072.83/330,665.72
  6. Step 6: Final answer
    x = 290,936.96

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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.