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Finding the Fourth Proportional to 18,953.15, 28,491.99 and 17,583.04

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Solution

The fourth proportional to 18,953.15, 28,491.99 and 17,583.04 is: 26,432.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.15 : 28,491.99 = 17,583.04 : x
  2. Step 2: Convert to fraction form
    18,953.15/28,491.99 = 17,583.04/x
  3. Step 3: Cross multiply
    18,953.15x = 28,491.99 × 17,583.04
  4. Step 4: Simplify right side
    18,953.15x = 500,975,799.85
  5. Step 5: Solve for x
    x = 500,975,799.85/18,953.15
  6. Step 6: Final answer
    x = 26,432.32

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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.