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Finding the Fourth Proportional to 383,897.78, 529,777.36 and 211,826.44

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Solution

The fourth proportional to 383,897.78, 529,777.36 and 211,826.44 is: 292,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,897.78 : 529,777.36 = 211,826.44 : x
  2. Step 2: Convert to fraction form
    383,897.78/529,777.36 = 211,826.44/x
  3. Step 3: Cross multiply
    383,897.78x = 529,777.36 × 211,826.44
  4. Step 4: Simplify right side
    383,897.78x = 112,220,853,088.40
  5. Step 5: Solve for x
    x = 112,220,853,088.40/383,897.78
  6. Step 6: Final answer
    x = 292,319.62

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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.