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Finding the Fourth Proportional to 14,662.80, 21,994.20 and 6,886.80

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Solution

The fourth proportional to 14,662.80, 21,994.20 and 6,886.80 is: 10,330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,662.80 : 21,994.20 = 6,886.80 : x
  2. Step 2: Convert to fraction form
    14,662.80/21,994.20 = 6,886.80/x
  3. Step 3: Cross multiply
    14,662.80x = 21,994.20 × 6,886.80
  4. Step 4: Simplify right side
    14,662.80x = 151,469,656.56
  5. Step 5: Solve for x
    x = 151,469,656.56/14,662.80
  6. Step 6: Final answer
    x = 10,330.20

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Half scale
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Double scale
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Similar ratio
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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.