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Finding the Fourth Proportional to 383,885.97, 529,761.15 and 211,814.65

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Solution

The fourth proportional to 383,885.97, 529,761.15 and 211,814.65 is: 292,303.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,885.97 : 529,761.15 = 211,814.65 : x
  2. Step 2: Convert to fraction form
    383,885.97/529,761.15 = 211,814.65/x
  3. Step 3: Cross multiply
    383,885.97x = 529,761.15 × 211,814.65
  4. Step 4: Simplify right side
    383,885.97x = 112,211,172,570.85
  5. Step 5: Solve for x
    x = 112,211,172,570.85/383,885.97
  6. Step 6: Final answer
    x = 292,303.40

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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.