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Finding the Fourth Proportional to 363,025.80, 545,121.90 and 274,379.40

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Solution

The fourth proportional to 363,025.80, 545,121.90 and 274,379.40 is: 412,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,025.80 : 545,121.90 = 274,379.40 : x
  2. Step 2: Convert to fraction form
    363,025.80/545,121.90 = 274,379.40/x
  3. Step 3: Cross multiply
    363,025.80x = 545,121.90 × 274,379.40
  4. Step 4: Simplify right side
    363,025.80x = 149,570,219,848.86
  5. Step 5: Solve for x
    x = 149,570,219,848.86/363,025.80
  6. Step 6: Final answer
    x = 412,009.89

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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.