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Finding the Fourth Proportional to 18,863.68, 28,287.28 and 9,497.76

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Solution

The fourth proportional to 18,863.68, 28,287.28 and 9,497.76 is: 14,242.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.68 : 28,287.28 = 9,497.76 : x
  2. Step 2: Convert to fraction form
    18,863.68/28,287.28 = 9,497.76/x
  3. Step 3: Cross multiply
    18,863.68x = 28,287.28 × 9,497.76
  4. Step 4: Simplify right side
    18,863.68x = 268,665,796.49
  5. Step 5: Solve for x
    x = 268,665,796.49/18,863.68
  6. Step 6: Final answer
    x = 14,242.49

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Half scale
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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.