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Finding the Fourth Proportional to 59,668.68, 89,447.28 and 20,198.28

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Solution

The fourth proportional to 59,668.68, 89,447.28 and 20,198.28 is: 30,278.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,668.68 : 89,447.28 = 20,198.28 : x
  2. Step 2: Convert to fraction form
    59,668.68/89,447.28 = 20,198.28/x
  3. Step 3: Cross multiply
    59,668.68x = 89,447.28 × 20,198.28
  4. Step 4: Simplify right side
    59,668.68x = 1,806,681,206.68
  5. Step 5: Solve for x
    x = 1,806,681,206.68/59,668.68
  6. Step 6: Final answer
    x = 30,278.55

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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.