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Finding the Fourth Proportional to 291,178.01, 436,766.88 and 80,815.88

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Solution

The fourth proportional to 291,178.01, 436,766.88 and 80,815.88 is: 121,223.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,178.01 : 436,766.88 = 80,815.88 : x
  2. Step 2: Convert to fraction form
    291,178.01/436,766.88 = 80,815.88/x
  3. Step 3: Cross multiply
    291,178.01x = 436,766.88 × 80,815.88
  4. Step 4: Simplify right side
    291,178.01x = 35,297,699,762.05
  5. Step 5: Solve for x
    x = 35,297,699,762.05/291,178.01
  6. Step 6: Final answer
    x = 121,223.78

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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.