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Finding the Fourth Proportional to 79,696.71, 119,552.40 and 20,532.60

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Solution

The fourth proportional to 79,696.71, 119,552.40 and 20,532.60 is: 30,800.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,696.71 : 119,552.40 = 20,532.60 : x
  2. Step 2: Convert to fraction form
    79,696.71/119,552.40 = 20,532.60/x
  3. Step 3: Cross multiply
    79,696.71x = 119,552.40 × 20,532.60
  4. Step 4: Simplify right side
    79,696.71x = 2,454,721,608.24
  5. Step 5: Solve for x
    x = 2,454,721,608.24/79,696.71
  6. Step 6: Final answer
    x = 30,800.79

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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.