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Finding the Fourth Proportional to 18,855.16, 28,294.65 and 10,540.63

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Solution

The fourth proportional to 18,855.16, 28,294.65 and 10,540.63 is: 15,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.16 : 28,294.65 = 10,540.63 : x
  2. Step 2: Convert to fraction form
    18,855.16/28,294.65 = 10,540.63/x
  3. Step 3: Cross multiply
    18,855.16x = 28,294.65 × 10,540.63
  4. Step 4: Simplify right side
    18,855.16x = 298,243,436.63
  5. Step 5: Solve for x
    x = 298,243,436.63/18,855.16
  6. Step 6: Final answer
    x = 15,817.60

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1.5x scale

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.