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Finding the Fourth Proportional to 68,995.28, 103,495.35 and 26,878.52

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Solution

The fourth proportional to 68,995.28, 103,495.35 and 26,878.52 is: 40,318.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,995.28 : 103,495.35 = 26,878.52 : x
  2. Step 2: Convert to fraction form
    68,995.28/103,495.35 = 26,878.52/x
  3. Step 3: Cross multiply
    68,995.28x = 103,495.35 × 26,878.52
  4. Step 4: Simplify right side
    68,995.28x = 2,781,801,834.88
  5. Step 5: Solve for x
    x = 2,781,801,834.88/68,995.28
  6. Step 6: Final answer
    x = 40,318.73

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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.