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Finding the Fourth Proportional to 68,865.84, 103,077.26 and 35,540.50

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Solution

The fourth proportional to 68,865.84, 103,077.26 and 35,540.50 is: 53,196.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,865.84 : 103,077.26 = 35,540.50 : x
  2. Step 2: Convert to fraction form
    68,865.84/103,077.26 = 35,540.50/x
  3. Step 3: Cross multiply
    68,865.84x = 103,077.26 × 35,540.50
  4. Step 4: Simplify right side
    68,865.84x = 3,663,417,359.03
  5. Step 5: Solve for x
    x = 3,663,417,359.03/68,865.84
  6. Step 6: Final answer
    x = 53,196.44

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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.