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Finding the Fourth Proportional to 322,580.40, 483,433.20 and 215,660.40

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Solution

The fourth proportional to 322,580.40, 483,433.20 and 215,660.40 is: 323,198.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,580.40 : 483,433.20 = 215,660.40 : x
  2. Step 2: Convert to fraction form
    322,580.40/483,433.20 = 215,660.40/x
  3. Step 3: Cross multiply
    322,580.40x = 483,433.20 × 215,660.40
  4. Step 4: Simplify right side
    322,580.40x = 104,257,397,285.28
  5. Step 5: Solve for x
    x = 104,257,397,285.28/322,580.40
  6. Step 6: Final answer
    x = 323,198.18

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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.