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Finding the Fourth Proportional to 685,311.75, 945,599.00 and 443,560.77

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Solution

The fourth proportional to 685,311.75, 945,599.00 and 443,560.77 is: 612,028.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,311.75 : 945,599.00 = 443,560.77 : x
  2. Step 2: Convert to fraction form
    685,311.75/945,599.00 = 443,560.77/x
  3. Step 3: Cross multiply
    685,311.75x = 945,599.00 × 443,560.77
  4. Step 4: Simplify right side
    685,311.75x = 419,430,618,333.43
  5. Step 5: Solve for x
    x = 419,430,618,333.43/685,311.75
  6. Step 6: Final answer
    x = 612,028.93

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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.