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Finding the Fourth Proportional to 68,287.60, 102,423.72 and 26,723.44

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Solution

The fourth proportional to 68,287.60, 102,423.72 and 26,723.44 is: 40,082.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,287.60 : 102,423.72 = 26,723.44 : x
  2. Step 2: Convert to fraction form
    68,287.60/102,423.72 = 26,723.44/x
  3. Step 3: Cross multiply
    68,287.60x = 102,423.72 × 26,723.44
  4. Step 4: Simplify right side
    68,287.60x = 2,737,114,136.00
  5. Step 5: Solve for x
    x = 2,737,114,136.00/68,287.60
  6. Step 6: Final answer
    x = 40,082.15

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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.