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Finding the Fourth Proportional to 189,520.83, 261,538.68 and 108,964.11

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Solution

The fourth proportional to 189,520.83, 261,538.68 and 108,964.11 is: 150,370.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,520.83 : 261,538.68 = 108,964.11 : x
  2. Step 2: Convert to fraction form
    189,520.83/261,538.68 = 108,964.11/x
  3. Step 3: Cross multiply
    189,520.83x = 261,538.68 × 108,964.11
  4. Step 4: Simplify right side
    189,520.83x = 28,498,329,496.77
  5. Step 5: Solve for x
    x = 28,498,329,496.77/189,520.83
  6. Step 6: Final answer
    x = 150,370.43

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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.