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Finding the Fourth Proportional to 291,722.20, 436,927.20 and 173,624.20

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Solution

The fourth proportional to 291,722.20, 436,927.20 and 173,624.20 is: 260,045.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,722.20 : 436,927.20 = 173,624.20 : x
  2. Step 2: Convert to fraction form
    291,722.20/436,927.20 = 173,624.20/x
  3. Step 3: Cross multiply
    291,722.20x = 436,927.20 × 173,624.20
  4. Step 4: Simplify right side
    291,722.20x = 75,861,135,558.24
  5. Step 5: Solve for x
    x = 75,861,135,558.24/291,722.20
  6. Step 6: Final answer
    x = 260,045.81

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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.