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Finding the Fourth Proportional to 18,348.96, 25,322.24 and 9,966.08

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Solution

The fourth proportional to 18,348.96, 25,322.24 and 9,966.08 is: 13,753.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348.96 : 25,322.24 = 9,966.08 : x
  2. Step 2: Convert to fraction form
    18,348.96/25,322.24 = 9,966.08/x
  3. Step 3: Cross multiply
    18,348.96x = 25,322.24 × 9,966.08
  4. Step 4: Simplify right side
    18,348.96x = 252,363,469.62
  5. Step 5: Solve for x
    x = 252,363,469.62/18,348.96
  6. Step 6: Final answer
    x = 13,753.56

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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.