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Finding the Fourth Proportional to 18,176.85, 27,259.98 and 7,081.05

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Solution

The fourth proportional to 18,176.85, 27,259.98 and 7,081.05 is: 10,619.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,176.85 : 27,259.98 = 7,081.05 : x
  2. Step 2: Convert to fraction form
    18,176.85/27,259.98 = 7,081.05/x
  3. Step 3: Cross multiply
    18,176.85x = 27,259.98 × 7,081.05
  4. Step 4: Simplify right side
    18,176.85x = 193,029,281.38
  5. Step 5: Solve for x
    x = 193,029,281.38/18,176.85
  6. Step 6: Final answer
    x = 10,619.51

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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.