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Finding the Fourth Proportional to 322,568.40, 483,415.20 and 215,648.40

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Solution

The fourth proportional to 322,568.40, 483,415.20 and 215,648.40 is: 323,180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,568.40 : 483,415.20 = 215,648.40 : x
  2. Step 2: Convert to fraction form
    322,568.40/483,415.20 = 215,648.40/x
  3. Step 3: Cross multiply
    322,568.40x = 483,415.20 × 215,648.40
  4. Step 4: Simplify right side
    322,568.40x = 104,247,714,415.68
  5. Step 5: Solve for x
    x = 104,247,714,415.68/322,568.40
  6. Step 6: Final answer
    x = 323,180.18

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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.