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Finding the Fourth Proportional to 381,605.40, 571,947.30 and 194,520.60

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Solution

The fourth proportional to 381,605.40, 571,947.30 and 194,520.60 is: 291,546.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,605.40 : 571,947.30 = 194,520.60 : x
  2. Step 2: Convert to fraction form
    381,605.40/571,947.30 = 194,520.60/x
  3. Step 3: Cross multiply
    381,605.40x = 571,947.30 × 194,520.60
  4. Step 4: Simplify right side
    381,605.40x = 111,255,531,964.38
  5. Step 5: Solve for x
    x = 111,255,531,964.38/381,605.40
  6. Step 6: Final answer
    x = 291,546.01

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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.