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Finding the Fourth Proportional to 189,662.39, 261,752.19 and 103,634.44

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Solution

The fourth proportional to 189,662.39, 261,752.19 and 103,634.44 is: 143,025.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,662.39 : 261,752.19 = 103,634.44 : x
  2. Step 2: Convert to fraction form
    189,662.39/261,752.19 = 103,634.44/x
  3. Step 3: Cross multiply
    189,662.39x = 261,752.19 × 103,634.44
  4. Step 4: Simplify right side
    189,662.39x = 27,126,541,169.36
  5. Step 5: Solve for x
    x = 27,126,541,169.36/189,662.39
  6. Step 6: Final answer
    x = 143,025.41

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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.