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Finding the Fourth Proportional to 358,889.58, 538,417.65 and 122,234.31

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Solution

The fourth proportional to 358,889.58, 538,417.65 and 122,234.31 is: 183,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,889.58 : 538,417.65 = 122,234.31 : x
  2. Step 2: Convert to fraction form
    358,889.58/538,417.65 = 122,234.31/x
  3. Step 3: Cross multiply
    358,889.58x = 538,417.65 × 122,234.31
  4. Step 4: Simplify right side
    358,889.58x = 65,813,109,939.57
  5. Step 5: Solve for x
    x = 65,813,109,939.57/358,889.58
  6. Step 6: Final answer
    x = 183,379.83

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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.