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Finding the Fourth Proportional to 119,138.91, 164,441.44 and 73,789.71

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Solution

The fourth proportional to 119,138.91, 164,441.44 and 73,789.71 is: 101,848.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,138.91 : 164,441.44 = 73,789.71 : x
  2. Step 2: Convert to fraction form
    119,138.91/164,441.44 = 73,789.71/x
  3. Step 3: Cross multiply
    119,138.91x = 164,441.44 × 73,789.71
  4. Step 4: Simplify right side
    119,138.91x = 12,134,085,347.38
  5. Step 5: Solve for x
    x = 12,134,085,347.38/119,138.91
  6. Step 6: Final answer
    x = 101,848.22

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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.