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Finding the Fourth Proportional to 18,516.92, 25,553.12 and 10,559.12

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Solution

The fourth proportional to 18,516.92, 25,553.12 and 10,559.12 is: 14,571.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,516.92 : 25,553.12 = 10,559.12 : x
  2. Step 2: Convert to fraction form
    18,516.92/25,553.12 = 10,559.12/x
  3. Step 3: Cross multiply
    18,516.92x = 25,553.12 × 10,559.12
  4. Step 4: Simplify right side
    18,516.92x = 269,818,460.45
  5. Step 5: Solve for x
    x = 269,818,460.45/18,516.92
  6. Step 6: Final answer
    x = 14,571.45

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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.