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Finding the Fourth Proportional to 189,036.39, 283,087.71 and 140,889.56

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Solution

The fourth proportional to 189,036.39, 283,087.71 and 140,889.56 is: 210,986.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,036.39 : 283,087.71 = 140,889.56 : x
  2. Step 2: Convert to fraction form
    189,036.39/283,087.71 = 140,889.56/x
  3. Step 3: Cross multiply
    189,036.39x = 283,087.71 × 140,889.56
  4. Step 4: Simplify right side
    189,036.39x = 39,884,101,487.87
  5. Step 5: Solve for x
    x = 39,884,101,487.87/189,036.39
  6. Step 6: Final answer
    x = 210,986.37

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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.