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Finding the Fourth Proportional to 8,173.45, 11,279.42 and 4,636.72

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Solution

The fourth proportional to 8,173.45, 11,279.42 and 4,636.72 is: 6,398.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,173.45 : 11,279.42 = 4,636.72 : x
  2. Step 2: Convert to fraction form
    8,173.45/11,279.42 = 4,636.72/x
  3. Step 3: Cross multiply
    8,173.45x = 11,279.42 × 4,636.72
  4. Step 4: Simplify right side
    8,173.45x = 52,299,489.12
  5. Step 5: Solve for x
    x = 52,299,489.12/8,173.45
  6. Step 6: Final answer
    x = 6,398.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.