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Finding the Fourth Proportional to 141,805.62, 195,697.62 and 81,378.81

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Solution

The fourth proportional to 141,805.62, 195,697.62 and 81,378.81 is: 112,306.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,805.62 : 195,697.62 = 81,378.81 : x
  2. Step 2: Convert to fraction form
    141,805.62/195,697.62 = 81,378.81/x
  3. Step 3: Cross multiply
    141,805.62x = 195,697.62 × 81,378.81
  4. Step 4: Simplify right side
    141,805.62x = 15,925,639,435.43
  5. Step 5: Solve for x
    x = 15,925,639,435.43/141,805.62
  6. Step 6: Final answer
    x = 112,306.12

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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.