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Finding the Fourth Proportional to 412,986.54, 570,121.67 and 276,970.73

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Solution

The fourth proportional to 412,986.54, 570,121.67 and 276,970.73 is: 382,353.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,986.54 : 570,121.67 = 276,970.73 : x
  2. Step 2: Convert to fraction form
    412,986.54/570,121.67 = 276,970.73/x
  3. Step 3: Cross multiply
    412,986.54x = 570,121.67 × 276,970.73
  4. Step 4: Simplify right side
    412,986.54x = 157,907,015,169.17
  5. Step 5: Solve for x
    x = 157,907,015,169.17/412,986.54
  6. Step 6: Final answer
    x = 382,353.90

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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.