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Finding the Fourth Proportional to 18,610.75, 25,682.84 and 10,227.25

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Solution

The fourth proportional to 18,610.75, 25,682.84 and 10,227.25 is: 14,113.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.75 : 25,682.84 = 10,227.25 : x
  2. Step 2: Convert to fraction form
    18,610.75/25,682.84 = 10,227.25/x
  3. Step 3: Cross multiply
    18,610.75x = 25,682.84 × 10,227.25
  4. Step 4: Simplify right side
    18,610.75x = 262,664,825.39
  5. Step 5: Solve for x
    x = 262,664,825.39/18,610.75
  6. Step 6: Final answer
    x = 14,113.61

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Find fourth proportional to 9,305.38, 12,841.42 and 5,113.63
Half scale
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Double scale
Find fourth proportional to 18,611.75, 25,684.22 and 10,228.25
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.