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Finding the Fourth Proportional to 358,682.70, 538,057.05 and 92,444.20

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Solution

The fourth proportional to 358,682.70, 538,057.05 and 92,444.20 is: 138,674.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,682.70 : 538,057.05 = 92,444.20 : x
  2. Step 2: Convert to fraction form
    358,682.70/538,057.05 = 92,444.20/x
  3. Step 3: Cross multiply
    358,682.70x = 538,057.05 × 92,444.20
  4. Step 4: Simplify right side
    358,682.70x = 49,740,253,541.61
  5. Step 5: Solve for x
    x = 49,740,253,541.61/358,682.70
  6. Step 6: Final answer
    x = 138,674.81

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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.