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Finding the Fourth Proportional to 68,715.88, 103,047.90 and 29,248.36

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Solution

The fourth proportional to 68,715.88, 103,047.90 and 29,248.36 is: 43,861.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,715.88 : 103,047.90 = 29,248.36 : x
  2. Step 2: Convert to fraction form
    68,715.88/103,047.90 = 29,248.36/x
  3. Step 3: Cross multiply
    68,715.88x = 103,047.90 × 29,248.36
  4. Step 4: Simplify right side
    68,715.88x = 3,013,982,076.44
  5. Step 5: Solve for x
    x = 3,013,982,076.44/68,715.88
  6. Step 6: Final answer
    x = 43,861.51

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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.