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Finding the Fourth Proportional to 141,892.80, 195,938.64 and 135,170.88

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Solution

The fourth proportional to 141,892.80, 195,938.64 and 135,170.88 is: 186,656.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,892.80 : 195,938.64 = 135,170.88 : x
  2. Step 2: Convert to fraction form
    141,892.80/195,938.64 = 135,170.88/x
  3. Step 3: Cross multiply
    141,892.80x = 195,938.64 × 135,170.88
  4. Step 4: Simplify right side
    141,892.80x = 26,485,198,394.80
  5. Step 5: Solve for x
    x = 26,485,198,394.80/141,892.80
  6. Step 6: Final answer
    x = 186,656.39

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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.