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Finding the Fourth Proportional to 383,886.87, 529,793.91 and 211,838.97

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Solution

The fourth proportional to 383,886.87, 529,793.91 and 211,838.97 is: 292,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,886.87 : 529,793.91 = 211,838.97 : x
  2. Step 2: Convert to fraction form
    383,886.87/529,793.91 = 211,838.97/x
  3. Step 3: Cross multiply
    383,886.87x = 529,793.91 × 211,838.97
  4. Step 4: Simplify right side
    383,886.87x = 112,230,996,206.67
  5. Step 5: Solve for x
    x = 112,230,996,206.67/383,886.87
  6. Step 6: Final answer
    x = 292,354.35

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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.