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Finding the Fourth Proportional to 18,643.21, 27,932.01 and 17,533.31

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Solution

The fourth proportional to 18,643.21, 27,932.01 and 17,533.31 is: 26,269.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.21 : 27,932.01 = 17,533.31 : x
  2. Step 2: Convert to fraction form
    18,643.21/27,932.01 = 17,533.31/x
  3. Step 3: Cross multiply
    18,643.21x = 27,932.01 × 17,533.31
  4. Step 4: Simplify right side
    18,643.21x = 489,740,520.42
  5. Step 5: Solve for x
    x = 489,740,520.42/18,643.21
  6. Step 6: Final answer
    x = 26,269.11

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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.