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Finding the Fourth Proportional to 445,558.96, 668,513.49 and 196,066

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Solution

The fourth proportional to 445,558.96, 668,513.49 and 196,066 is: 294,176.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,558.96 : 668,513.49 = 196,066 : x
  2. Step 2: Convert to fraction form
    445,558.96/668,513.49 = 196,066/x
  3. Step 3: Cross multiply
    445,558.96x = 668,513.49 × 196,066
  4. Step 4: Simplify right side
    445,558.96x = 131,072,765,930.34
  5. Step 5: Solve for x
    x = 131,072,765,930.34/445,558.96
  6. Step 6: Final answer
    x = 294,176.03

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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.