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Finding the Fourth Proportional to 59,665.68, 89,442.78 and 20,195.28

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Solution

The fourth proportional to 59,665.68, 89,442.78 and 20,195.28 is: 30,274.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,665.68 : 89,442.78 = 20,195.28 : x
  2. Step 2: Convert to fraction form
    59,665.68/89,442.78 = 20,195.28/x
  3. Step 3: Cross multiply
    59,665.68x = 89,442.78 × 20,195.28
  4. Step 4: Simplify right side
    59,665.68x = 1,806,321,986.08
  5. Step 5: Solve for x
    x = 1,806,321,986.08/59,665.68
  6. Step 6: Final answer
    x = 30,274.05

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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.