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Finding the Fourth Proportional to 68,920.44, 103,328.76 and 35,191.44

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Solution

The fourth proportional to 68,920.44, 103,328.76 and 35,191.44 is: 52,760.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,920.44 : 103,328.76 = 35,191.44 : x
  2. Step 2: Convert to fraction form
    68,920.44/103,328.76 = 35,191.44/x
  3. Step 3: Cross multiply
    68,920.44x = 103,328.76 × 35,191.44
  4. Step 4: Simplify right side
    68,920.44x = 3,636,287,857.81
  5. Step 5: Solve for x
    x = 3,636,287,857.81/68,920.44
  6. Step 6: Final answer
    x = 52,760.66

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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.