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Finding the Fourth Proportional to 170,601.72, 255,377.66 and 111,309.72

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Solution

The fourth proportional to 170,601.72, 255,377.66 and 111,309.72 is: 166,622.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,601.72 : 255,377.66 = 111,309.72 : x
  2. Step 2: Convert to fraction form
    170,601.72/255,377.66 = 111,309.72/x
  3. Step 3: Cross multiply
    170,601.72x = 255,377.66 × 111,309.72
  4. Step 4: Simplify right side
    170,601.72x = 28,426,015,828.86
  5. Step 5: Solve for x
    x = 28,426,015,828.86/170,601.72
  6. Step 6: Final answer
    x = 166,622.09

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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.