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Finding the Fourth Proportional to 91,568.97, 137,505.86 and 61,774.97

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Solution

The fourth proportional to 91,568.97, 137,505.86 and 61,774.97 is: 92,765.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,568.97 : 137,505.86 = 61,774.97 : x
  2. Step 2: Convert to fraction form
    91,568.97/137,505.86 = 61,774.97/x
  3. Step 3: Cross multiply
    91,568.97x = 137,505.86 × 61,774.97
  4. Step 4: Simplify right side
    91,568.97x = 8,494,420,376.32
  5. Step 5: Solve for x
    x = 8,494,420,376.32/91,568.97
  6. Step 6: Final answer
    x = 92,765.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.