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Finding the Fourth Proportional to 18,702.19, 25,812.23 and 17,861.41

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Solution

The fourth proportional to 18,702.19, 25,812.23 and 17,861.41 is: 24,651.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.19 : 25,812.23 = 17,861.41 : x
  2. Step 2: Convert to fraction form
    18,702.19/25,812.23 = 17,861.41/x
  3. Step 3: Cross multiply
    18,702.19x = 25,812.23 × 17,861.41
  4. Step 4: Simplify right side
    18,702.19x = 461,042,823.04
  5. Step 5: Solve for x
    x = 461,042,823.04/18,702.19
  6. Step 6: Final answer
    x = 24,651.81

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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.