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Finding the Fourth Proportional to 79,217.74, 118,826.70 and 20,053.41

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Solution

The fourth proportional to 79,217.74, 118,826.70 and 20,053.41 is: 30,080.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,217.74 : 118,826.70 = 20,053.41 : x
  2. Step 2: Convert to fraction form
    79,217.74/118,826.70 = 20,053.41/x
  3. Step 3: Cross multiply
    79,217.74x = 118,826.70 × 20,053.41
  4. Step 4: Simplify right side
    79,217.74x = 2,382,880,534.05
  5. Step 5: Solve for x
    x = 2,382,880,534.05/79,217.74
  6. Step 6: Final answer
    x = 30,080.14

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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.