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Finding the Fourth Proportional to 18,392.81, 27,591.95 and 8,533.08

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Solution

The fourth proportional to 18,392.81, 27,591.95 and 8,533.08 is: 12,800.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.81 : 27,591.95 = 8,533.08 : x
  2. Step 2: Convert to fraction form
    18,392.81/27,591.95 = 8,533.08/x
  3. Step 3: Cross multiply
    18,392.81x = 27,591.95 × 8,533.08
  4. Step 4: Simplify right side
    18,392.81x = 235,444,338.04
  5. Step 5: Solve for x
    x = 235,444,338.04/18,392.81
  6. Step 6: Final answer
    x = 12,800.89

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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.