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Finding the Fourth Proportional to 141,892.56, 195,813.25 and 78,232.64

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Solution

The fourth proportional to 141,892.56, 195,813.25 and 78,232.64 is: 107,961.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,892.56 : 195,813.25 = 78,232.64 : x
  2. Step 2: Convert to fraction form
    141,892.56/195,813.25 = 78,232.64/x
  3. Step 3: Cross multiply
    141,892.56x = 195,813.25 × 78,232.64
  4. Step 4: Simplify right side
    141,892.56x = 15,318,986,319.83
  5. Step 5: Solve for x
    x = 15,318,986,319.83/141,892.56
  6. Step 6: Final answer
    x = 107,961.87

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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.