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Finding the Fourth Proportional to 192,658.28, 288,864.32 and 92,619.42

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Solution

The fourth proportional to 192,658.28, 288,864.32 and 92,619.42 is: 138,869.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,658.28 : 288,864.32 = 92,619.42 : x
  2. Step 2: Convert to fraction form
    192,658.28/288,864.32 = 92,619.42/x
  3. Step 3: Cross multiply
    192,658.28x = 288,864.32 × 92,619.42
  4. Step 4: Simplify right side
    192,658.28x = 26,754,445,777.09
  5. Step 5: Solve for x
    x = 26,754,445,777.09/192,658.28
  6. Step 6: Final answer
    x = 138,869.95

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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.