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Finding the Fourth Proportional to 16,672.10, 24,991.54 and 13,719.65

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Solution

The fourth proportional to 16,672.10, 24,991.54 and 13,719.65 is: 20,565.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,672.10 : 24,991.54 = 13,719.65 : x
  2. Step 2: Convert to fraction form
    16,672.10/24,991.54 = 13,719.65/x
  3. Step 3: Cross multiply
    16,672.10x = 24,991.54 × 13,719.65
  4. Step 4: Simplify right side
    16,672.10x = 342,875,022.50
  5. Step 5: Solve for x
    x = 342,875,022.50/16,672.10
  6. Step 6: Final answer
    x = 20,565.80

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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.