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Finding the Fourth Proportional to 621,223.26, 931,855.72 and 171,906.54

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Solution

The fourth proportional to 621,223.26, 931,855.72 and 171,906.54 is: 257,865.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,223.26 : 931,855.72 = 171,906.54 : x
  2. Step 2: Convert to fraction form
    621,223.26/931,855.72 = 171,906.54/x
  3. Step 3: Cross multiply
    621,223.26x = 931,855.72 × 171,906.54
  4. Step 4: Simplify right side
    621,223.26x = 160,192,092,604.41
  5. Step 5: Solve for x
    x = 160,192,092,604.41/621,223.26
  6. Step 6: Final answer
    x = 257,865.57

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1.5x scale

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.