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Finding the Fourth Proportional to 141,891.90, 195,834.15 and 85,334.46

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Solution

The fourth proportional to 141,891.90, 195,834.15 and 85,334.46 is: 117,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,891.90 : 195,834.15 = 85,334.46 : x
  2. Step 2: Convert to fraction form
    141,891.90/195,834.15 = 85,334.46/x
  3. Step 3: Cross multiply
    141,891.90x = 195,834.15 × 85,334.46
  4. Step 4: Simplify right side
    141,891.90x = 16,711,401,439.81
  5. Step 5: Solve for x
    x = 16,711,401,439.81/141,891.90
  6. Step 6: Final answer
    x = 117,775.58

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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.