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Finding the Fourth Proportional to 9,944.40, 13,234.80 and 9,944.40

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Solution

The fourth proportional to 9,944.40, 13,234.80 and 9,944.40 is: 13,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,944.40 : 13,234.80 = 9,944.40 : x
  2. Step 2: Convert to fraction form
    9,944.40/13,234.80 = 9,944.40/x
  3. Step 3: Cross multiply
    9,944.40x = 13,234.80 × 9,944.40
  4. Step 4: Simplify right side
    9,944.40x = 131,612,145.12
  5. Step 5: Solve for x
    x = 131,612,145.12/9,944.40
  6. Step 6: Final answer
    x = 13,234.80

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