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Finding the Fourth Proportional to 451,808.10, 677,809.35 and 136,296.90

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Solution

The fourth proportional to 451,808.10, 677,809.35 and 136,296.90 is: 204,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,808.10 : 677,809.35 = 136,296.90 : x
  2. Step 2: Convert to fraction form
    451,808.10/677,809.35 = 136,296.90/x
  3. Step 3: Cross multiply
    451,808.10x = 677,809.35 × 136,296.90
  4. Step 4: Simplify right side
    451,808.10x = 92,383,313,196.02
  5. Step 5: Solve for x
    x = 92,383,313,196.02/451,808.10
  6. Step 6: Final answer
    x = 204,474.67

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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.