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Finding the Fourth Proportional to 15,093.15, 20,827.56 and 8,378.46

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Solution

The fourth proportional to 15,093.15, 20,827.56 and 8,378.46 is: 11,561.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,093.15 : 20,827.56 = 8,378.46 : x
  2. Step 2: Convert to fraction form
    15,093.15/20,827.56 = 8,378.46/x
  3. Step 3: Cross multiply
    15,093.15x = 20,827.56 × 8,378.46
  4. Step 4: Simplify right side
    15,093.15x = 174,502,878.36
  5. Step 5: Solve for x
    x = 174,502,878.36/15,093.15
  6. Step 6: Final answer
    x = 11,561.73

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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.