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Finding the Fourth Proportional to 18,630.92, 25,710.68 and 10,247.42

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Solution

The fourth proportional to 18,630.92, 25,710.68 and 10,247.42 is: 14,141.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.92 : 25,710.68 = 10,247.42 : x
  2. Step 2: Convert to fraction form
    18,630.92/25,710.68 = 10,247.42/x
  3. Step 3: Cross multiply
    18,630.92x = 25,710.68 × 10,247.42
  4. Step 4: Simplify right side
    18,630.92x = 263,468,226.34
  5. Step 5: Solve for x
    x = 263,468,226.34/18,630.92
  6. Step 6: Final answer
    x = 14,141.45

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Half scale
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Double scale
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Similar ratio
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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.