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Finding the Fourth Proportional to 291,147.86, 436,716.92 and 131,134.80

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Solution

The fourth proportional to 291,147.86, 436,716.92 and 131,134.80 is: 196,700.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,147.86 : 436,716.92 = 131,134.80 : x
  2. Step 2: Convert to fraction form
    291,147.86/436,716.92 = 131,134.80/x
  3. Step 3: Cross multiply
    291,147.86x = 436,716.92 × 131,134.80
  4. Step 4: Simplify right side
    291,147.86x = 57,268,785,960.82
  5. Step 5: Solve for x
    x = 57,268,785,960.82/291,147.86
  6. Step 6: Final answer
    x = 196,700.01

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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.