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Finding the Fourth Proportional to 35,318.52, 48,725.77 and 20,203.11

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Solution

The fourth proportional to 35,318.52, 48,725.77 and 20,203.11 is: 27,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,318.52 : 48,725.77 = 20,203.11 : x
  2. Step 2: Convert to fraction form
    35,318.52/48,725.77 = 20,203.11/x
  3. Step 3: Cross multiply
    35,318.52x = 48,725.77 × 20,203.11
  4. Step 4: Simplify right side
    35,318.52x = 984,411,990.13
  5. Step 5: Solve for x
    x = 984,411,990.13/35,318.52
  6. Step 6: Final answer
    x = 27,872.40

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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.