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Finding the Fourth Proportional to 445,560.96, 668,516.40 and 196,068

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Solution

The fourth proportional to 445,560.96, 668,516.40 and 196,068 is: 294,178.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,560.96 : 668,516.40 = 196,068 : x
  2. Step 2: Convert to fraction form
    445,560.96/668,516.40 = 196,068/x
  3. Step 3: Cross multiply
    445,560.96x = 668,516.40 × 196,068
  4. Step 4: Simplify right side
    445,560.96x = 131,074,673,515.20
  5. Step 5: Solve for x
    x = 131,074,673,515.20/445,560.96
  6. Step 6: Final answer
    x = 294,178.99

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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.