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Finding the Fourth Proportional to 79,205.80, 118,808.70 and 49,243.90

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Solution

The fourth proportional to 79,205.80, 118,808.70 and 49,243.90 is: 73,865.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,205.80 : 118,808.70 = 49,243.90 : x
  2. Step 2: Convert to fraction form
    79,205.80/118,808.70 = 49,243.90/x
  3. Step 3: Cross multiply
    79,205.80x = 118,808.70 × 49,243.90
  4. Step 4: Simplify right side
    79,205.80x = 5,850,603,741.93
  5. Step 5: Solve for x
    x = 5,850,603,741.93/79,205.80
  6. Step 6: Final answer
    x = 73,865.85

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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.