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Finding the Fourth Proportional to 68,690.79, 103,006.49 and 23,716.89

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Solution

The fourth proportional to 68,690.79, 103,006.49 and 23,716.89 is: 35,565.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,690.79 : 103,006.49 = 23,716.89 : x
  2. Step 2: Convert to fraction form
    68,690.79/103,006.49 = 23,716.89/x
  3. Step 3: Cross multiply
    68,690.79x = 103,006.49 × 23,716.89
  4. Step 4: Simplify right side
    68,690.79x = 2,442,993,474.03
  5. Step 5: Solve for x
    x = 2,442,993,474.03/68,690.79
  6. Step 6: Final answer
    x = 35,565.08

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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.