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Finding the Fourth Proportional to 383,779.86, 529,603.79 and 211,697.43

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Solution

The fourth proportional to 383,779.86, 529,603.79 and 211,697.43 is: 292,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,779.86 : 529,603.79 = 211,697.43 : x
  2. Step 2: Convert to fraction form
    383,779.86/529,603.79 = 211,697.43/x
  3. Step 3: Cross multiply
    383,779.86x = 529,603.79 × 211,697.43
  4. Step 4: Simplify right side
    383,779.86x = 112,115,760,202.77
  5. Step 5: Solve for x
    x = 112,115,760,202.77/383,779.86
  6. Step 6: Final answer
    x = 292,135.60

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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.