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Finding the Fourth Proportional to 541,738.72, 813,395.40 and 400,021.12

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Solution

The fourth proportional to 541,738.72, 813,395.40 and 400,021.12 is: 600,613.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,738.72 : 813,395.40 = 400,021.12 : x
  2. Step 2: Convert to fraction form
    541,738.72/813,395.40 = 400,021.12/x
  3. Step 3: Cross multiply
    541,738.72x = 813,395.40 × 400,021.12
  4. Step 4: Simplify right side
    541,738.72x = 325,375,338,910.85
  5. Step 5: Solve for x
    x = 325,375,338,910.85/541,738.72
  6. Step 6: Final answer
    x = 600,613.04

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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.