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Finding the Fourth Proportional to 446,415.46, 669,623.19 and 197,047.78

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Solution

The fourth proportional to 446,415.46, 669,623.19 and 197,047.78 is: 295,571.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,415.46 : 669,623.19 = 197,047.78 : x
  2. Step 2: Convert to fraction form
    446,415.46/669,623.19 = 197,047.78/x
  3. Step 3: Cross multiply
    446,415.46x = 669,623.19 × 197,047.78
  4. Step 4: Simplify right side
    446,415.46x = 131,947,763,026.02
  5. Step 5: Solve for x
    x = 131,947,763,026.02/446,415.46
  6. Step 6: Final answer
    x = 295,571.67

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Double scale
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Similar ratio
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1.5x scale

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.