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Finding the Fourth Proportional to 14,245.44, 19,658.76 and 7,957.92

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Solution

The fourth proportional to 14,245.44, 19,658.76 and 7,957.92 is: 10,981.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,245.44 : 19,658.76 = 7,957.92 : x
  2. Step 2: Convert to fraction form
    14,245.44/19,658.76 = 7,957.92/x
  3. Step 3: Cross multiply
    14,245.44x = 19,658.76 × 7,957.92
  4. Step 4: Simplify right side
    14,245.44x = 156,442,839.38
  5. Step 5: Solve for x
    x = 156,442,839.38/14,245.44
  6. Step 6: Final answer
    x = 10,981.96

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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.