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Finding the Fourth Proportional to 68,900.94, 103,265.12 and 29,411.82

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Solution

The fourth proportional to 68,900.94, 103,265.12 and 29,411.82 is: 44,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,900.94 : 103,265.12 = 29,411.82 : x
  2. Step 2: Convert to fraction form
    68,900.94/103,265.12 = 29,411.82/x
  3. Step 3: Cross multiply
    68,900.94x = 103,265.12 × 29,411.82
  4. Step 4: Simplify right side
    68,900.94x = 3,037,215,121.72
  5. Step 5: Solve for x
    x = 3,037,215,121.72/68,900.94
  6. Step 6: Final answer
    x = 44,080.90

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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.