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Finding the Fourth Proportional to 170,596.87, 255,687.71 and 120,691.35

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Solution

The fourth proportional to 170,596.87, 255,687.71 and 120,691.35 is: 180,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,596.87 : 255,687.71 = 120,691.35 : x
  2. Step 2: Convert to fraction form
    170,596.87/255,687.71 = 120,691.35/x
  3. Step 3: Cross multiply
    170,596.87x = 255,687.71 × 120,691.35
  4. Step 4: Simplify right side
    170,596.87x = 30,859,294,294.85
  5. Step 5: Solve for x
    x = 30,859,294,294.85/170,596.87
  6. Step 6: Final answer
    x = 180,890.16

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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.