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Finding the Fourth Proportional to 685,325.04, 945,847.52 and 394,880.96

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Solution

The fourth proportional to 685,325.04, 945,847.52 and 394,880.96 is: 544,992.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,325.04 : 945,847.52 = 394,880.96 : x
  2. Step 2: Convert to fraction form
    685,325.04/945,847.52 = 394,880.96/x
  3. Step 3: Cross multiply
    685,325.04x = 945,847.52 × 394,880.96
  4. Step 4: Simplify right side
    685,325.04x = 373,497,176,711.22
  5. Step 5: Solve for x
    x = 373,497,176,711.22/685,325.04
  6. Step 6: Final answer
    x = 544,992.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.