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Finding the Fourth Proportional to 167,721.12, 250,978.68 and 123,237.36

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Solution

The fourth proportional to 167,721.12, 250,978.68 and 123,237.36 is: 184,412.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,721.12 : 250,978.68 = 123,237.36 : x
  2. Step 2: Convert to fraction form
    167,721.12/250,978.68 = 123,237.36/x
  3. Step 3: Cross multiply
    167,721.12x = 250,978.68 × 123,237.36
  4. Step 4: Simplify right side
    167,721.12x = 30,929,949,939.48
  5. Step 5: Solve for x
    x = 30,929,949,939.48/167,721.12
  6. Step 6: Final answer
    x = 184,412.97

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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.