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Finding the Fourth Proportional to 19,267.72, 28,905.48 and 10,951.72

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Solution

The fourth proportional to 19,267.72, 28,905.48 and 10,951.72 is: 16,429.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,267.72 : 28,905.48 = 10,951.72 : x
  2. Step 2: Convert to fraction form
    19,267.72/28,905.48 = 10,951.72/x
  3. Step 3: Cross multiply
    19,267.72x = 28,905.48 × 10,951.72
  4. Step 4: Simplify right side
    19,267.72x = 316,564,723.43
  5. Step 5: Solve for x
    x = 316,564,723.43/19,267.72
  6. Step 6: Final answer
    x = 16,429.80

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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.