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Finding the Fourth Proportional to 18,351.13, 27,526.70 and 5,203.62

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Solution

The fourth proportional to 18,351.13, 27,526.70 and 5,203.62 is: 7,805.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.13 : 27,526.70 = 5,203.62 : x
  2. Step 2: Convert to fraction form
    18,351.13/27,526.70 = 5,203.62/x
  3. Step 3: Cross multiply
    18,351.13x = 27,526.70 × 5,203.62
  4. Step 4: Simplify right side
    18,351.13x = 143,238,486.65
  5. Step 5: Solve for x
    x = 143,238,486.65/18,351.13
  6. Step 6: Final answer
    x = 7,805.43

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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.