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Finding the Fourth Proportional to 260,933.46, 391,449.36 and 83,392.80

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Solution

The fourth proportional to 260,933.46, 391,449.36 and 83,392.80 is: 125,104.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,933.46 : 391,449.36 = 83,392.80 : x
  2. Step 2: Convert to fraction form
    260,933.46/391,449.36 = 83,392.80/x
  3. Step 3: Cross multiply
    260,933.46x = 391,449.36 × 83,392.80
  4. Step 4: Simplify right side
    260,933.46x = 32,644,058,188.61
  5. Step 5: Solve for x
    x = 32,644,058,188.61/260,933.46
  6. Step 6: Final answer
    x = 125,104.91

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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.