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Finding the Fourth Proportional to 18,994.21, 26,211.90 and 10,496.92

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Solution

The fourth proportional to 18,994.21, 26,211.90 and 10,496.92 is: 14,485.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.21 : 26,211.90 = 10,496.92 : x
  2. Step 2: Convert to fraction form
    18,994.21/26,211.90 = 10,496.92/x
  3. Step 3: Cross multiply
    18,994.21x = 26,211.90 × 10,496.92
  4. Step 4: Simplify right side
    18,994.21x = 275,144,151.82
  5. Step 5: Solve for x
    x = 275,144,151.82/18,994.21
  6. Step 6: Final answer
    x = 14,485.69

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.