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Finding the Fourth Proportional to 94,861.76, 141,983.76 and 69,891.80

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Solution

The fourth proportional to 94,861.76, 141,983.76 and 69,891.80 is: 104,610.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,861.76 : 141,983.76 = 69,891.80 : x
  2. Step 2: Convert to fraction form
    94,861.76/141,983.76 = 69,891.80/x
  3. Step 3: Cross multiply
    94,861.76x = 141,983.76 × 69,891.80
  4. Step 4: Simplify right side
    94,861.76x = 9,923,500,557.17
  5. Step 5: Solve for x
    x = 9,923,500,557.17/94,861.76
  6. Step 6: Final answer
    x = 104,610.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.