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Finding the Fourth Proportional to 141,855.57, 195,756.95 and 78,193.62

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Solution

The fourth proportional to 141,855.57, 195,756.95 and 78,193.62 is: 107,905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,855.57 : 195,756.95 = 78,193.62 : x
  2. Step 2: Convert to fraction form
    141,855.57/195,756.95 = 78,193.62/x
  3. Step 3: Cross multiply
    141,855.57x = 195,756.95 × 78,193.62
  4. Step 4: Simplify right side
    141,855.57x = 15,306,944,756.14
  5. Step 5: Solve for x
    x = 15,306,944,756.14/141,855.57
  6. Step 6: Final answer
    x = 107,905.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.