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Finding the Fourth Proportional to 14,712.17, 20,302.89 and 7,997.86

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Solution

The fourth proportional to 14,712.17, 20,302.89 and 7,997.86 is: 11,037.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,712.17 : 20,302.89 = 7,997.86 : x
  2. Step 2: Convert to fraction form
    14,712.17/20,302.89 = 7,997.86/x
  3. Step 3: Cross multiply
    14,712.17x = 20,302.89 × 7,997.86
  4. Step 4: Simplify right side
    14,712.17x = 162,379,570.30
  5. Step 5: Solve for x
    x = 162,379,570.30/14,712.17
  6. Step 6: Final answer
    x = 11,037.09

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1.5x scale

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.