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Finding the Fourth Proportional to 66,242.73, 91,416.15 and 36,028.72

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Solution

The fourth proportional to 66,242.73, 91,416.15 and 36,028.72 is: 49,720.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,242.73 : 91,416.15 = 36,028.72 : x
  2. Step 2: Convert to fraction form
    66,242.73/91,416.15 = 36,028.72/x
  3. Step 3: Cross multiply
    66,242.73x = 91,416.15 × 36,028.72
  4. Step 4: Simplify right side
    66,242.73x = 3,293,606,234.60
  5. Step 5: Solve for x
    x = 3,293,606,234.60/66,242.73
  6. Step 6: Final answer
    x = 49,720.27

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Why These Related Problems?

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