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Finding the Fourth Proportional to 353,078.40, 529,617.60 and 203,779.20

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Solution

The fourth proportional to 353,078.40, 529,617.60 and 203,779.20 is: 305,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,078.40 : 529,617.60 = 203,779.20 : x
  2. Step 2: Convert to fraction form
    353,078.40/529,617.60 = 203,779.20/x
  3. Step 3: Cross multiply
    353,078.40x = 529,617.60 × 203,779.20
  4. Step 4: Simplify right side
    353,078.40x = 107,925,050,833.92
  5. Step 5: Solve for x
    x = 107,925,050,833.92/353,078.40
  6. Step 6: Final answer
    x = 305,668.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.