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Finding the Fourth Proportional to 189,393.52, 261,354.18 and 108,764.20

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Solution

The fourth proportional to 189,393.52, 261,354.18 and 108,764.20 is: 150,089.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,393.52 : 261,354.18 = 108,764.20 : x
  2. Step 2: Convert to fraction form
    189,393.52/261,354.18 = 108,764.20/x
  3. Step 3: Cross multiply
    189,393.52x = 261,354.18 × 108,764.20
  4. Step 4: Simplify right side
    189,393.52x = 28,425,978,304.36
  5. Step 5: Solve for x
    x = 28,425,978,304.36/189,393.52
  6. Step 6: Final answer
    x = 150,089.50

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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.