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Finding the Fourth Proportional to 79,190.88, 118,613.44 and 39,679.04

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Solution

The fourth proportional to 79,190.88, 118,613.44 and 39,679.04 is: 59,431.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,190.88 : 118,613.44 = 39,679.04 : x
  2. Step 2: Convert to fraction form
    79,190.88/118,613.44 = 39,679.04/x
  3. Step 3: Cross multiply
    79,190.88x = 118,613.44 × 39,679.04
  4. Step 4: Simplify right side
    79,190.88x = 4,706,467,430.30
  5. Step 5: Solve for x
    x = 4,706,467,430.30/79,190.88
  6. Step 6: Final answer
    x = 59,431.94

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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.