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Finding the Fourth Proportional to 66,786.54, 92,087.22 and 53,314.62

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Solution

The fourth proportional to 66,786.54, 92,087.22 and 53,314.62 is: 73,511.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.54 : 92,087.22 = 53,314.62 : x
  2. Step 2: Convert to fraction form
    66,786.54/92,087.22 = 53,314.62/x
  3. Step 3: Cross multiply
    66,786.54x = 92,087.22 × 53,314.62
  4. Step 4: Simplify right side
    66,786.54x = 4,909,595,141.16
  5. Step 5: Solve for x
    x = 4,909,595,141.16/66,786.54
  6. Step 6: Final answer
    x = 73,511.75

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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.