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Finding the Fourth Proportional to 170,456.75, 255,772.79 and 130,730.96

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Solution

The fourth proportional to 170,456.75, 255,772.79 and 130,730.96 is: 196,163.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,456.75 : 255,772.79 = 130,730.96 : x
  2. Step 2: Convert to fraction form
    170,456.75/255,772.79 = 130,730.96/x
  3. Step 3: Cross multiply
    170,456.75x = 255,772.79 × 130,730.96
  4. Step 4: Simplify right side
    170,456.75x = 33,437,422,854.60
  5. Step 5: Solve for x
    x = 33,437,422,854.60/170,456.75
  6. Step 6: Final answer
    x = 196,163.67

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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.