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Finding the Fourth Proportional to 383,806.88, 529,660.40 and 211,744.48

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Solution

The fourth proportional to 383,806.88, 529,660.40 and 211,744.48 is: 292,211.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,806.88 : 529,660.40 = 211,744.48 : x
  2. Step 2: Convert to fraction form
    383,806.88/529,660.40 = 211,744.48/x
  3. Step 3: Cross multiply
    383,806.88x = 529,660.40 × 211,744.48
  4. Step 4: Simplify right side
    383,806.88x = 112,152,665,974.59
  5. Step 5: Solve for x
    x = 112,152,665,974.59/383,806.88
  6. Step 6: Final answer
    x = 292,211.19

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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.