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Finding the Fourth Proportional to 35,499.76, 48,984.38 and 20,393.08

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Solution

The fourth proportional to 35,499.76, 48,984.38 and 20,393.08 is: 28,139.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,499.76 : 48,984.38 = 20,393.08 : x
  2. Step 2: Convert to fraction form
    35,499.76/48,984.38 = 20,393.08/x
  3. Step 3: Cross multiply
    35,499.76x = 48,984.38 × 20,393.08
  4. Step 4: Simplify right side
    35,499.76x = 998,942,380.09
  5. Step 5: Solve for x
    x = 998,942,380.09/35,499.76
  6. Step 6: Final answer
    x = 28,139.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.