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Finding the Fourth Proportional to 12,173.94, 16,808.85 and 7,994.34

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Solution

The fourth proportional to 12,173.94, 16,808.85 and 7,994.34 is: 11,037.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,173.94 : 16,808.85 = 7,994.34 : x
  2. Step 2: Convert to fraction form
    12,173.94/16,808.85 = 7,994.34/x
  3. Step 3: Cross multiply
    12,173.94x = 16,808.85 × 7,994.34
  4. Step 4: Simplify right side
    12,173.94x = 134,375,661.91
  5. Step 5: Solve for x
    x = 134,375,661.91/12,173.94
  6. Step 6: Final answer
    x = 11,037.98

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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.