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Finding the Fourth Proportional to 383,704.32, 529,515.63 and 211,628.90

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Solution

The fourth proportional to 383,704.32, 529,515.63 and 211,628.90 is: 292,049.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,704.32 : 529,515.63 = 211,628.90 : x
  2. Step 2: Convert to fraction form
    383,704.32/529,515.63 = 211,628.90/x
  3. Step 3: Cross multiply
    383,704.32x = 529,515.63 × 211,628.90
  4. Step 4: Simplify right side
    383,704.32x = 112,060,811,633.50
  5. Step 5: Solve for x
    x = 112,060,811,633.50/383,704.32
  6. Step 6: Final answer
    x = 292,049.91

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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.