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Finding the Fourth Proportional to 18,810.55, 25,953.30 and 14,819.27

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Solution

The fourth proportional to 18,810.55, 25,953.30 and 14,819.27 is: 20,446.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.55 : 25,953.30 = 14,819.27 : x
  2. Step 2: Convert to fraction form
    18,810.55/25,953.30 = 14,819.27/x
  3. Step 3: Cross multiply
    18,810.55x = 25,953.30 × 14,819.27
  4. Step 4: Simplify right side
    18,810.55x = 384,608,960.09
  5. Step 5: Solve for x
    x = 384,608,960.09/18,810.55
  6. Step 6: Final answer
    x = 20,446.45

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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.