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Finding the Fourth Proportional to 209,879.05, 289,624.65 and 114,383.69

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Solution

The fourth proportional to 209,879.05, 289,624.65 and 114,383.69 is: 157,844.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,879.05 : 289,624.65 = 114,383.69 : x
  2. Step 2: Convert to fraction form
    209,879.05/289,624.65 = 114,383.69/x
  3. Step 3: Cross multiply
    209,879.05x = 289,624.65 × 114,383.69
  4. Step 4: Simplify right side
    209,879.05x = 33,128,336,181.96
  5. Step 5: Solve for x
    x = 33,128,336,181.96/209,879.05
  6. Step 6: Final answer
    x = 157,844.89

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1.5x scale

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.