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Finding the Fourth Proportional to 178,718.58, 268,065.09 and 103,791.96

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Solution

The fourth proportional to 178,718.58, 268,065.09 and 103,791.96 is: 155,680.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,718.58 : 268,065.09 = 103,791.96 : x
  2. Step 2: Convert to fraction form
    178,718.58/268,065.09 = 103,791.96/x
  3. Step 3: Cross multiply
    178,718.58x = 268,065.09 × 103,791.96
  4. Step 4: Simplify right side
    178,718.58x = 27,823,001,098.68
  5. Step 5: Solve for x
    x = 27,823,001,098.68/178,718.58
  6. Step 6: Final answer
    x = 155,680.52

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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.