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Finding the Fourth Proportional to 383,953.50, 529,790.22 and 222,771.60

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Solution

The fourth proportional to 383,953.50, 529,790.22 and 222,771.60 is: 307,386.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,953.50 : 529,790.22 = 222,771.60 : x
  2. Step 2: Convert to fraction form
    383,953.50/529,790.22 = 222,771.60/x
  3. Step 3: Cross multiply
    383,953.50x = 529,790.22 × 222,771.60
  4. Step 4: Simplify right side
    383,953.50x = 118,022,214,973.75
  5. Step 5: Solve for x
    x = 118,022,214,973.75/383,953.50
  6. Step 6: Final answer
    x = 307,386.74

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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.