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Finding the Fourth Proportional to 436,915.62, 603,129.38 and 293,758.65

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Solution

The fourth proportional to 436,915.62, 603,129.38 and 293,758.65 is: 405,511.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,915.62 : 603,129.38 = 293,758.65 : x
  2. Step 2: Convert to fraction form
    436,915.62/603,129.38 = 293,758.65/x
  3. Step 3: Cross multiply
    436,915.62x = 603,129.38 × 293,758.65
  4. Step 4: Simplify right side
    436,915.62x = 177,174,470,975.34
  5. Step 5: Solve for x
    x = 177,174,470,975.34/436,915.62
  6. Step 6: Final answer
    x = 405,511.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.