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Finding the Fourth Proportional to 159,471.33, 239,174.11 and 70,668.19

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Solution

The fourth proportional to 159,471.33, 239,174.11 and 70,668.19 is: 105,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,471.33 : 239,174.11 = 70,668.19 : x
  2. Step 2: Convert to fraction form
    159,471.33/239,174.11 = 70,668.19/x
  3. Step 3: Cross multiply
    159,471.33x = 239,174.11 × 70,668.19
  4. Step 4: Simplify right side
    159,471.33x = 16,902,001,448.56
  5. Step 5: Solve for x
    x = 16,902,001,448.56/159,471.33
  6. Step 6: Final answer
    x = 105,987.71

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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.