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Finding the Fourth Proportional to 322,406.70, 483,610.05 and 100,790.70

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Solution

The fourth proportional to 322,406.70, 483,610.05 and 100,790.70 is: 151,186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,406.70 : 483,610.05 = 100,790.70 : x
  2. Step 2: Convert to fraction form
    322,406.70/483,610.05 = 100,790.70/x
  3. Step 3: Cross multiply
    322,406.70x = 483,610.05 × 100,790.70
  4. Step 4: Simplify right side
    322,406.70x = 48,743,395,466.54
  5. Step 5: Solve for x
    x = 48,743,395,466.54/322,406.70
  6. Step 6: Final answer
    x = 151,186.05

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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.