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Finding the Fourth Proportional to 48,858.55, 73,322.82 and 20,798.28

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Solution

The fourth proportional to 48,858.55, 73,322.82 and 20,798.28 is: 31,212.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,858.55 : 73,322.82 = 20,798.28 : x
  2. Step 2: Convert to fraction form
    48,858.55/73,322.82 = 20,798.28/x
  3. Step 3: Cross multiply
    48,858.55x = 73,322.82 × 20,798.28
  4. Step 4: Simplify right side
    48,858.55x = 1,524,988,540.75
  5. Step 5: Solve for x
    x = 1,524,988,540.75/48,858.55
  6. Step 6: Final answer
    x = 31,212.32

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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.