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Finding the Fourth Proportional to 351,507.99, 485,078.46 and 190,359.30

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Solution

The fourth proportional to 351,507.99, 485,078.46 and 190,359.30 is: 262,694.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,507.99 : 485,078.46 = 190,359.30 : x
  2. Step 2: Convert to fraction form
    351,507.99/485,078.46 = 190,359.30/x
  3. Step 3: Cross multiply
    351,507.99x = 485,078.46 × 190,359.30
  4. Step 4: Simplify right side
    351,507.99x = 92,339,196,090.68
  5. Step 5: Solve for x
    x = 92,339,196,090.68/351,507.99
  6. Step 6: Final answer
    x = 262,694.44

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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.