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Finding the Fourth Proportional to 141,706.80, 195,537.24 and 81,287.28

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Solution

The fourth proportional to 141,706.80, 195,537.24 and 81,287.28 is: 112,166.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,706.80 : 195,537.24 = 81,287.28 : x
  2. Step 2: Convert to fraction form
    141,706.80/195,537.24 = 81,287.28/x
  3. Step 3: Cross multiply
    141,706.80x = 195,537.24 × 81,287.28
  4. Step 4: Simplify right side
    141,706.80x = 15,894,690,378.31
  5. Step 5: Solve for x
    x = 15,894,690,378.31/141,706.80
  6. Step 6: Final answer
    x = 112,166.04

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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.