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Finding the Fourth Proportional to 68,969.52, 95,178.04 and 39,161.52

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Solution

The fourth proportional to 68,969.52, 95,178.04 and 39,161.52 is: 54,042.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,969.52 : 95,178.04 = 39,161.52 : x
  2. Step 2: Convert to fraction form
    68,969.52/95,178.04 = 39,161.52/x
  3. Step 3: Cross multiply
    68,969.52x = 95,178.04 × 39,161.52
  4. Step 4: Simplify right side
    68,969.52x = 3,727,316,717.02
  5. Step 5: Solve for x
    x = 3,727,316,717.02/68,969.52
  6. Step 6: Final answer
    x = 54,042.96

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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.