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Finding the Fourth Proportional to 355,163.40, 490,119.31 and 194,014.30

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Solution

The fourth proportional to 355,163.40, 490,119.31 and 194,014.30 is: 267,736.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,163.40 : 490,119.31 = 194,014.30 : x
  2. Step 2: Convert to fraction form
    355,163.40/490,119.31 = 194,014.30/x
  3. Step 3: Cross multiply
    355,163.40x = 490,119.31 × 194,014.30
  4. Step 4: Simplify right side
    355,163.40x = 95,090,153,876.06
  5. Step 5: Solve for x
    x = 95,090,153,876.06/355,163.40
  6. Step 6: Final answer
    x = 267,736.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.