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Finding the Fourth Proportional to 377,620.40, 566,430.60 and 361,441.20

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Solution

The fourth proportional to 377,620.40, 566,430.60 and 361,441.20 is: 542,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,620.40 : 566,430.60 = 361,441.20 : x
  2. Step 2: Convert to fraction form
    377,620.40/566,430.60 = 361,441.20/x
  3. Step 3: Cross multiply
    377,620.40x = 566,430.60 × 361,441.20
  4. Step 4: Simplify right side
    377,620.40x = 204,731,355,780.72
  5. Step 5: Solve for x
    x = 204,731,355,780.72/377,620.40
  6. Step 6: Final answer
    x = 542,161.80

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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.