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Finding the Fourth Proportional to 54,000.10, 81,000.15 and 18,943.30

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Solution

The fourth proportional to 54,000.10, 81,000.15 and 18,943.30 is: 28,414.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,000.10 : 81,000.15 = 18,943.30 : x
  2. Step 2: Convert to fraction form
    54,000.10/81,000.15 = 18,943.30/x
  3. Step 3: Cross multiply
    54,000.10x = 81,000.15 × 18,943.30
  4. Step 4: Simplify right side
    54,000.10x = 1,534,410,141.50
  5. Step 5: Solve for x
    x = 1,534,410,141.50/54,000.10
  6. Step 6: Final answer
    x = 28,414.95

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.