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Finding the Fourth Proportional to 18,928.04, 28,392.06 and 8,542.76

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Solution

The fourth proportional to 18,928.04, 28,392.06 and 8,542.76 is: 12,814.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.04 : 28,392.06 = 8,542.76 : x
  2. Step 2: Convert to fraction form
    18,928.04/28,392.06 = 8,542.76/x
  3. Step 3: Cross multiply
    18,928.04x = 28,392.06 × 8,542.76
  4. Step 4: Simplify right side
    18,928.04x = 242,546,554.49
  5. Step 5: Solve for x
    x = 242,546,554.49/18,928.04
  6. Step 6: Final answer
    x = 12,814.14

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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.