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Finding the Fourth Proportional to 358,932.54, 538,357.12 and 92,672.13

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Solution

The fourth proportional to 358,932.54, 538,357.12 and 92,672.13 is: 138,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,932.54 : 538,357.12 = 92,672.13 : x
  2. Step 2: Convert to fraction form
    358,932.54/538,357.12 = 92,672.13/x
  3. Step 3: Cross multiply
    358,932.54x = 538,357.12 × 92,672.13
  4. Step 4: Simplify right side
    358,932.54x = 49,890,701,011.07
  5. Step 5: Solve for x
    x = 49,890,701,011.07/358,932.54
  6. Step 6: Final answer
    x = 138,997.43

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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.