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Finding the Fourth Proportional to 47,672.70, 71,487.45 and 18,080.70

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Solution

The fourth proportional to 47,672.70, 71,487.45 and 18,080.70 is: 27,112.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,672.70 : 71,487.45 = 18,080.70 : x
  2. Step 2: Convert to fraction form
    47,672.70/71,487.45 = 18,080.70/x
  3. Step 3: Cross multiply
    47,672.70x = 71,487.45 × 18,080.70
  4. Step 4: Simplify right side
    47,672.70x = 1,292,543,137.22
  5. Step 5: Solve for x
    x = 1,292,543,137.22/47,672.70
  6. Step 6: Final answer
    x = 27,112.86

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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.