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Finding the Fourth Proportional to 18,074.99, 27,109.76 and 4,928.40

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Solution

The fourth proportional to 18,074.99, 27,109.76 and 4,928.40 is: 7,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,074.99 : 27,109.76 = 4,928.40 : x
  2. Step 2: Convert to fraction form
    18,074.99/27,109.76 = 4,928.40/x
  3. Step 3: Cross multiply
    18,074.99x = 27,109.76 × 4,928.40
  4. Step 4: Simplify right side
    18,074.99x = 133,607,716.54
  5. Step 5: Solve for x
    x = 133,607,716.54/18,074.99
  6. Step 6: Final answer
    x = 7,391.85

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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.