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Finding the Fourth Proportional to 142,605.84, 196,769.88 and 82,167.96

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Solution

The fourth proportional to 142,605.84, 196,769.88 and 82,167.96 is: 113,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,605.84 : 196,769.88 = 82,167.96 : x
  2. Step 2: Convert to fraction form
    142,605.84/196,769.88 = 82,167.96/x
  3. Step 3: Cross multiply
    142,605.84x = 196,769.88 × 82,167.96
  4. Step 4: Simplify right side
    142,605.84x = 16,168,179,629.04
  5. Step 5: Solve for x
    x = 16,168,179,629.04/142,605.84
  6. Step 6: Final answer
    x = 113,376.70

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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.