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Finding the Fourth Proportional to 18,442.69, 25,441.80 and 11,633.63

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Solution

The fourth proportional to 18,442.69, 25,441.80 and 11,633.63 is: 16,048.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,442.69 : 25,441.80 = 11,633.63 : x
  2. Step 2: Convert to fraction form
    18,442.69/25,441.80 = 11,633.63/x
  3. Step 3: Cross multiply
    18,442.69x = 25,441.80 × 11,633.63
  4. Step 4: Simplify right side
    18,442.69x = 295,980,316.90
  5. Step 5: Solve for x
    x = 295,980,316.90/18,442.69
  6. Step 6: Final answer
    x = 16,048.65

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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.