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Finding the Fourth Proportional to 178,585.56, 267,871.86 and 72,015.48

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Solution

The fourth proportional to 178,585.56, 267,871.86 and 72,015.48 is: 108,020.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,585.56 : 267,871.86 = 72,015.48 : x
  2. Step 2: Convert to fraction form
    178,585.56/267,871.86 = 72,015.48/x
  3. Step 3: Cross multiply
    178,585.56x = 267,871.86 × 72,015.48
  4. Step 4: Simplify right side
    178,585.56x = 19,290,920,576.39
  5. Step 5: Solve for x
    x = 19,290,920,576.39/178,585.56
  6. Step 6: Final answer
    x = 108,020.61

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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.