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Finding the Fourth Proportional to 383,777.76, 529,615.44 and 211,701.78

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Solution

The fourth proportional to 383,777.76, 529,615.44 and 211,701.78 is: 292,149.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,777.76 : 529,615.44 = 211,701.78 : x
  2. Step 2: Convert to fraction form
    383,777.76/529,615.44 = 211,701.78/x
  3. Step 3: Cross multiply
    383,777.76x = 529,615.44 × 211,701.78
  4. Step 4: Simplify right side
    383,777.76x = 112,120,531,363.48
  5. Step 5: Solve for x
    x = 112,120,531,363.48/383,777.76
  6. Step 6: Final answer
    x = 292,149.63

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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.