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Finding the Fourth Proportional to 10,991.72, 16,489.62 and 3,596.58

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Solution

The fourth proportional to 10,991.72, 16,489.62 and 3,596.58 is: 5,395.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.72 : 16,489.62 = 3,596.58 : x
  2. Step 2: Convert to fraction form
    10,991.72/16,489.62 = 3,596.58/x
  3. Step 3: Cross multiply
    10,991.72x = 16,489.62 × 3,596.58
  4. Step 4: Simplify right side
    10,991.72x = 59,306,237.50
  5. Step 5: Solve for x
    x = 59,306,237.50/10,991.72
  6. Step 6: Final answer
    x = 5,395.54

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1.5x scale

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.