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Finding the Fourth Proportional to 18,392.92, 25,380.16 and 10,838.76

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Solution

The fourth proportional to 18,392.92, 25,380.16 and 10,838.76 is: 14,956.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.92 : 25,380.16 = 10,838.76 : x
  2. Step 2: Convert to fraction form
    18,392.92/25,380.16 = 10,838.76/x
  3. Step 3: Cross multiply
    18,392.92x = 25,380.16 × 10,838.76
  4. Step 4: Simplify right side
    18,392.92x = 275,089,463.00
  5. Step 5: Solve for x
    x = 275,089,463.00/18,392.92
  6. Step 6: Final answer
    x = 14,956.27

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Half scale
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Double scale
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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.