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Finding the Fourth Proportional to 68,874.84, 95,057.28 and 38,672.64

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Solution

The fourth proportional to 68,874.84, 95,057.28 and 38,672.64 is: 53,373.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,874.84 : 95,057.28 = 38,672.64 : x
  2. Step 2: Convert to fraction form
    68,874.84/95,057.28 = 38,672.64/x
  3. Step 3: Cross multiply
    68,874.84x = 95,057.28 × 38,672.64
  4. Step 4: Simplify right side
    68,874.84x = 3,676,115,968.82
  5. Step 5: Solve for x
    x = 3,676,115,968.82/68,874.84
  6. Step 6: Final answer
    x = 53,373.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.