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Finding the Fourth Proportional to 170,662.02, 255,650.19 and 85,014.65

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Solution

The fourth proportional to 170,662.02, 255,650.19 and 85,014.65 is: 127,351.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,662.02 : 255,650.19 = 85,014.65 : x
  2. Step 2: Convert to fraction form
    170,662.02/255,650.19 = 85,014.65/x
  3. Step 3: Cross multiply
    170,662.02x = 255,650.19 × 85,014.65
  4. Step 4: Simplify right side
    170,662.02x = 21,734,010,147.03
  5. Step 5: Solve for x
    x = 21,734,010,147.03/170,662.02
  6. Step 6: Final answer
    x = 127,351.18

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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.