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Finding the Fourth Proportional to 38,446.80, 57,616.20 and 30,562.80

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Solution

The fourth proportional to 38,446.80, 57,616.20 and 30,562.80 is: 45,801.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,446.80 : 57,616.20 = 30,562.80 : x
  2. Step 2: Convert to fraction form
    38,446.80/57,616.20 = 30,562.80/x
  3. Step 3: Cross multiply
    38,446.80x = 57,616.20 × 30,562.80
  4. Step 4: Simplify right side
    38,446.80x = 1,760,912,397.36
  5. Step 5: Solve for x
    x = 1,760,912,397.36/38,446.80
  6. Step 6: Final answer
    x = 45,801.27

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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.