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Finding the Fourth Proportional to 685,898.37, 946,539.57 and 379,994.67

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Solution

The fourth proportional to 685,898.37, 946,539.57 and 379,994.67 is: 524,392.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,898.37 : 946,539.57 = 379,994.67 : x
  2. Step 2: Convert to fraction form
    685,898.37/946,539.57 = 379,994.67/x
  3. Step 3: Cross multiply
    685,898.37x = 946,539.57 × 379,994.67
  4. Step 4: Simplify right side
    685,898.37x = 359,679,991,544.09
  5. Step 5: Solve for x
    x = 359,679,991,544.09/685,898.37
  6. Step 6: Final answer
    x = 524,392.54

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Double scale
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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.