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Finding the Fourth Proportional to 14,671.62, 20,243.16 and 8,703

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Solution

The fourth proportional to 14,671.62, 20,243.16 and 8,703 is: 12,007.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.62 : 20,243.16 = 8,703 : x
  2. Step 2: Convert to fraction form
    14,671.62/20,243.16 = 8,703/x
  3. Step 3: Cross multiply
    14,671.62x = 20,243.16 × 8,703
  4. Step 4: Simplify right side
    14,671.62x = 176,176,221.48
  5. Step 5: Solve for x
    x = 176,176,221.48/14,671.62
  6. Step 6: Final answer
    x = 12,007.96

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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.