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Finding the Fourth Proportional to 189,379.62, 283,872.60 and 77,011.56

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Solution

The fourth proportional to 189,379.62, 283,872.60 and 77,011.56 is: 115,437.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,379.62 : 283,872.60 = 77,011.56 : x
  2. Step 2: Convert to fraction form
    189,379.62/283,872.60 = 77,011.56/x
  3. Step 3: Cross multiply
    189,379.62x = 283,872.60 × 77,011.56
  4. Step 4: Simplify right side
    189,379.62x = 21,861,471,767.26
  5. Step 5: Solve for x
    x = 21,861,471,767.26/189,379.62
  6. Step 6: Final answer
    x = 115,437.30

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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.