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Finding the Fourth Proportional to 18,251.82, 25,157.88 and 14,265.90

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Solution

The fourth proportional to 18,251.82, 25,157.88 and 14,265.90 is: 19,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,251.82 : 25,157.88 = 14,265.90 : x
  2. Step 2: Convert to fraction form
    18,251.82/25,157.88 = 14,265.90/x
  3. Step 3: Cross multiply
    18,251.82x = 25,157.88 × 14,265.90
  4. Step 4: Simplify right side
    18,251.82x = 358,899,800.29
  5. Step 5: Solve for x
    x = 358,899,800.29/18,251.82
  6. Step 6: Final answer
    x = 19,663.78

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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.