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Finding the Fourth Proportional to 80,624.61, 120,905.80 and 26,576.32

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Solution

The fourth proportional to 80,624.61, 120,905.80 and 26,576.32 is: 39,854.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,624.61 : 120,905.80 = 26,576.32 : x
  2. Step 2: Convert to fraction form
    80,624.61/120,905.80 = 26,576.32/x
  3. Step 3: Cross multiply
    80,624.61x = 120,905.80 × 26,576.32
  4. Step 4: Simplify right side
    80,624.61x = 3,213,230,928.39
  5. Step 5: Solve for x
    x = 3,213,230,928.39/80,624.61
  6. Step 6: Final answer
    x = 39,854.22

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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.