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Finding the Fourth Proportional to 68,583.38, 103,047.60 and 43,634.57

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Solution

The fourth proportional to 68,583.38, 103,047.60 and 43,634.57 is: 65,561.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,583.38 : 103,047.60 = 43,634.57 : x
  2. Step 2: Convert to fraction form
    68,583.38/103,047.60 = 43,634.57/x
  3. Step 3: Cross multiply
    68,583.38x = 103,047.60 × 43,634.57
  4. Step 4: Simplify right side
    68,583.38x = 4,496,437,715.53
  5. Step 5: Solve for x
    x = 4,496,437,715.53/68,583.38
  6. Step 6: Final answer
    x = 65,561.62

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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.