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Finding the Fourth Proportional to 28,331.92, 42,497.88 and 13,495.88

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Solution

The fourth proportional to 28,331.92, 42,497.88 and 13,495.88 is: 20,243.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.92 : 42,497.88 = 13,495.88 : x
  2. Step 2: Convert to fraction form
    28,331.92/42,497.88 = 13,495.88/x
  3. Step 3: Cross multiply
    28,331.92x = 42,497.88 × 13,495.88
  4. Step 4: Simplify right side
    28,331.92x = 573,546,288.73
  5. Step 5: Solve for x
    x = 573,546,288.73/28,331.92
  6. Step 6: Final answer
    x = 20,243.82

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Similar ratio
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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.