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Finding the Fourth Proportional to 79,167.53, 118,751.27 and 20,003.20

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Solution

The fourth proportional to 79,167.53, 118,751.27 and 20,003.20 is: 30,004.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,167.53 : 118,751.27 = 20,003.20 : x
  2. Step 2: Convert to fraction form
    79,167.53/118,751.27 = 20,003.20/x
  3. Step 3: Cross multiply
    79,167.53x = 118,751.27 × 20,003.20
  4. Step 4: Simplify right side
    79,167.53x = 2,375,405,007.17
  5. Step 5: Solve for x
    x = 2,375,405,007.17/79,167.53
  6. Step 6: Final answer
    x = 30,004.79

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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.