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Finding the Fourth Proportional to 395,933.40, 593,900.10 and 115,459.80

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Solution

The fourth proportional to 395,933.40, 593,900.10 and 115,459.80 is: 173,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,933.40 : 593,900.10 = 115,459.80 : x
  2. Step 2: Convert to fraction form
    395,933.40/593,900.10 = 115,459.80/x
  3. Step 3: Cross multiply
    395,933.40x = 593,900.10 × 115,459.80
  4. Step 4: Simplify right side
    395,933.40x = 68,571,586,765.98
  5. Step 5: Solve for x
    x = 68,571,586,765.98/395,933.40
  6. Step 6: Final answer
    x = 173,189.70

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Similar ratio
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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.