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Finding the Fourth Proportional to 79,207.56, 118,811.60 and 20,043.23

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Solution

The fourth proportional to 79,207.56, 118,811.60 and 20,043.23 is: 30,064.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,207.56 : 118,811.60 = 20,043.23 : x
  2. Step 2: Convert to fraction form
    79,207.56/118,811.60 = 20,043.23/x
  3. Step 3: Cross multiply
    79,207.56x = 118,811.60 × 20,043.23
  4. Step 4: Simplify right side
    79,207.56x = 2,381,367,531.19
  5. Step 5: Solve for x
    x = 2,381,367,531.19/79,207.56
  6. Step 6: Final answer
    x = 30,064.90

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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.