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Finding the Fourth Proportional to 8,082,609.70, 12,123,914.55 and 7,043,347.30

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Solution

The fourth proportional to 8,082,609.70, 12,123,914.55 and 7,043,347.30 is: 10,565,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,082,609.70 : 12,123,914.55 = 7,043,347.30 : x
  2. Step 2: Convert to fraction form
    8,082,609.70/12,123,914.55 = 7,043,347.30/x
  3. Step 3: Cross multiply
    8,082,609.70x = 12,123,914.55 × 7,043,347.30
  4. Step 4: Simplify right side
    8,082,609.70x = 85,392,940,811,173.22
  5. Step 5: Solve for x
    x = 85,392,940,811,173.22/8,082,609.70
  6. Step 6: Final answer
    x = 10,565,020.95

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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.