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Finding the Fourth Proportional to 16,990.92, 23,447.34 and 9,538.92

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Solution

The fourth proportional to 16,990.92, 23,447.34 and 9,538.92 is: 13,163.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.92 : 23,447.34 = 9,538.92 : x
  2. Step 2: Convert to fraction form
    16,990.92/23,447.34 = 9,538.92/x
  3. Step 3: Cross multiply
    16,990.92x = 23,447.34 × 9,538.92
  4. Step 4: Simplify right side
    16,990.92x = 223,662,300.47
  5. Step 5: Solve for x
    x = 223,662,300.47/16,990.92
  6. Step 6: Final answer
    x = 13,163.64

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Half scale
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Double scale
Find fourth proportional to 16,991.92, 23,448.72 and 9,539.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.