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Finding the Fourth Proportional to 685,295.25, 946,136.34 and 440,379.33

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Solution

The fourth proportional to 685,295.25, 946,136.34 and 440,379.33 is: 607,999.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,295.25 : 946,136.34 = 440,379.33 : x
  2. Step 2: Convert to fraction form
    685,295.25/946,136.34 = 440,379.33/x
  3. Step 3: Cross multiply
    685,295.25x = 946,136.34 × 440,379.33
  4. Step 4: Simplify right side
    685,295.25x = 416,658,887,497.85
  5. Step 5: Solve for x
    x = 416,658,887,497.85/685,295.25
  6. Step 6: Final answer
    x = 607,999.09

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1.5x scale

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.