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Finding the Fourth Proportional to 92,872.99, 128,169.03 and 52,581.43

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Solution

The fourth proportional to 92,872.99, 128,169.03 and 52,581.43 is: 72,564.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,872.99 : 128,169.03 = 52,581.43 : x
  2. Step 2: Convert to fraction form
    92,872.99/128,169.03 = 52,581.43/x
  3. Step 3: Cross multiply
    92,872.99x = 128,169.03 × 52,581.43
  4. Step 4: Simplify right side
    92,872.99x = 6,739,310,879.11
  5. Step 5: Solve for x
    x = 6,739,310,879.11/92,872.99
  6. Step 6: Final answer
    x = 72,564.81

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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.