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Finding the Fourth Proportional to 394,714.80, 591,391.80 and 183,920.40

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Solution

The fourth proportional to 394,714.80, 591,391.80 and 183,920.40 is: 275,563.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,714.80 : 591,391.80 = 183,920.40 : x
  2. Step 2: Convert to fraction form
    394,714.80/591,391.80 = 183,920.40/x
  3. Step 3: Cross multiply
    394,714.80x = 591,391.80 × 183,920.40
  4. Step 4: Simplify right side
    394,714.80x = 108,769,016,412.72
  5. Step 5: Solve for x
    x = 108,769,016,412.72/394,714.80
  6. Step 6: Final answer
    x = 275,563.56

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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.