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Finding the Fourth Proportional to 312,152.22, 430,771.21 and 168,912.27

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Solution

The fourth proportional to 312,152.22, 430,771.21 and 168,912.27 is: 233,099.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,152.22 : 430,771.21 = 168,912.27 : x
  2. Step 2: Convert to fraction form
    312,152.22/430,771.21 = 168,912.27/x
  3. Step 3: Cross multiply
    312,152.22x = 430,771.21 × 168,912.27
  4. Step 4: Simplify right side
    312,152.22x = 72,762,542,509.47
  5. Step 5: Solve for x
    x = 72,762,542,509.47/312,152.22
  6. Step 6: Final answer
    x = 233,099.55

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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.