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Finding the Fourth Proportional to 18,657.08, 27,965.91 and 6,173.90

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Solution

The fourth proportional to 18,657.08, 27,965.91 and 6,173.90 is: 9,254.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.08 : 27,965.91 = 6,173.90 : x
  2. Step 2: Convert to fraction form
    18,657.08/27,965.91 = 6,173.90/x
  3. Step 3: Cross multiply
    18,657.08x = 27,965.91 × 6,173.90
  4. Step 4: Simplify right side
    18,657.08x = 172,658,731.75
  5. Step 5: Solve for x
    x = 172,658,731.75/18,657.08
  6. Step 6: Final answer
    x = 9,254.33

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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.