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Finding the Fourth Proportional to 19,791.67, 29,684.76 and 4,999.69

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Solution

The fourth proportional to 19,791.67, 29,684.76 and 4,999.69 is: 7,498.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.67 : 29,684.76 = 4,999.69 : x
  2. Step 2: Convert to fraction form
    19,791.67/29,684.76 = 4,999.69/x
  3. Step 3: Cross multiply
    19,791.67x = 29,684.76 × 4,999.69
  4. Step 4: Simplify right side
    19,791.67x = 148,414,597.72
  5. Step 5: Solve for x
    x = 148,414,597.72/19,791.67
  6. Step 6: Final answer
    x = 7,498.84

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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.