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Finding the Fourth Proportional to 68,895.42, 103,255.65 and 33,349.38

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Solution

The fourth proportional to 68,895.42, 103,255.65 and 33,349.38 is: 49,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,895.42 : 103,255.65 = 33,349.38 : x
  2. Step 2: Convert to fraction form
    68,895.42/103,255.65 = 33,349.38/x
  3. Step 3: Cross multiply
    68,895.42x = 103,255.65 × 33,349.38
  4. Step 4: Simplify right side
    68,895.42x = 3,443,511,909.00
  5. Step 5: Solve for x
    x = 3,443,511,909.00/68,895.42
  6. Step 6: Final answer
    x = 49,981.72

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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.