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Finding the Fourth Proportional to 66,774.75, 92,148.84 and 36,147.87

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Solution

The fourth proportional to 66,774.75, 92,148.84 and 36,147.87 is: 49,883.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,774.75 : 92,148.84 = 36,147.87 : x
  2. Step 2: Convert to fraction form
    66,774.75/92,148.84 = 36,147.87/x
  3. Step 3: Cross multiply
    66,774.75x = 92,148.84 × 36,147.87
  4. Step 4: Simplify right side
    66,774.75x = 3,330,984,288.97
  5. Step 5: Solve for x
    x = 3,330,984,288.97/66,774.75
  6. Step 6: Final answer
    x = 49,883.89

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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.