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Finding the Fourth Proportional to 393,927.75, 591,015.96 and 299,609.73

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Solution

The fourth proportional to 393,927.75, 591,015.96 and 299,609.73 is: 449,509.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,927.75 : 591,015.96 = 299,609.73 : x
  2. Step 2: Convert to fraction form
    393,927.75/591,015.96 = 299,609.73/x
  3. Step 3: Cross multiply
    393,927.75x = 591,015.96 × 299,609.73
  4. Step 4: Simplify right side
    393,927.75x = 177,074,132,201.29
  5. Step 5: Solve for x
    x = 177,074,132,201.29/393,927.75
  6. Step 6: Final answer
    x = 449,509.16

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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.