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Finding the Fourth Proportional to 383,230.21, 528,874.01 and 213,464.41

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Solution

The fourth proportional to 383,230.21, 528,874.01 and 213,464.41 is: 294,589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,230.21 : 528,874.01 = 213,464.41 : x
  2. Step 2: Convert to fraction form
    383,230.21/528,874.01 = 213,464.41/x
  3. Step 3: Cross multiply
    383,230.21x = 528,874.01 × 213,464.41
  4. Step 4: Simplify right side
    383,230.21x = 112,895,778,508.98
  5. Step 5: Solve for x
    x = 112,895,778,508.98/383,230.21
  6. Step 6: Final answer
    x = 294,589.98

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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.