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Finding the Fourth Proportional to 178,959.81, 268,242.87 and 73,721.37

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Solution

The fourth proportional to 178,959.81, 268,242.87 and 73,721.37 is: 110,500.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,959.81 : 268,242.87 = 73,721.37 : x
  2. Step 2: Convert to fraction form
    178,959.81/268,242.87 = 73,721.37/x
  3. Step 3: Cross multiply
    178,959.81x = 268,242.87 × 73,721.37
  4. Step 4: Simplify right side
    178,959.81x = 19,775,231,869.13
  5. Step 5: Solve for x
    x = 19,775,231,869.13/178,959.81
  6. Step 6: Final answer
    x = 110,500.97

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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.