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Finding the Fourth Proportional to 18,435.15, 27,670.55 and 17,436.15

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Solution

The fourth proportional to 18,435.15, 27,670.55 and 17,436.15 is: 26,171.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,435.15 : 27,670.55 = 17,436.15 : x
  2. Step 2: Convert to fraction form
    18,435.15/27,670.55 = 17,436.15/x
  3. Step 3: Cross multiply
    18,435.15x = 27,670.55 × 17,436.15
  4. Step 4: Simplify right side
    18,435.15x = 482,467,773.20
  5. Step 5: Solve for x
    x = 482,467,773.20/18,435.15
  6. Step 6: Final answer
    x = 26,171.08

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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.