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Finding the Fourth Proportional to 189,525.36, 261,544.88 and 108,968.64

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Solution

The fourth proportional to 189,525.36, 261,544.88 and 108,968.64 is: 150,376.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,525.36 : 261,544.88 = 108,968.64 : x
  2. Step 2: Convert to fraction form
    189,525.36/261,544.88 = 108,968.64/x
  3. Step 3: Cross multiply
    189,525.36x = 261,544.88 × 108,968.64
  4. Step 4: Simplify right side
    189,525.36x = 28,500,189,872.56
  5. Step 5: Solve for x
    x = 28,500,189,872.56/189,525.36
  6. Step 6: Final answer
    x = 150,376.66

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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.