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Finding the Fourth Proportional to 15,936.22, 23,908.02 and 5,405.68

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Solution

The fourth proportional to 15,936.22, 23,908.02 and 5,405.68 is: 8,109.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936.22 : 23,908.02 = 5,405.68 : x
  2. Step 2: Convert to fraction form
    15,936.22/23,908.02 = 5,405.68/x
  3. Step 3: Cross multiply
    15,936.22x = 23,908.02 × 5,405.68
  4. Step 4: Simplify right side
    15,936.22x = 129,239,105.55
  5. Step 5: Solve for x
    x = 129,239,105.55/15,936.22
  6. Step 6: Final answer
    x = 8,109.77

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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.