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Finding the Fourth Proportional to 35,239.50, 48,634.83 and 20,335.50

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Solution

The fourth proportional to 35,239.50, 48,634.83 and 20,335.50 is: 28,065.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,239.50 : 48,634.83 = 20,335.50 : x
  2. Step 2: Convert to fraction form
    35,239.50/48,634.83 = 20,335.50/x
  3. Step 3: Cross multiply
    35,239.50x = 48,634.83 × 20,335.50
  4. Step 4: Simplify right side
    35,239.50x = 989,013,585.47
  5. Step 5: Solve for x
    x = 989,013,585.47/35,239.50
  6. Step 6: Final answer
    x = 28,065.48

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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.