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Finding the Fourth Proportional to 18,426.70, 27,640.05 and 7,332.67

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Solution

The fourth proportional to 18,426.70, 27,640.05 and 7,332.67 is: 10,999.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.70 : 27,640.05 = 7,332.67 : x
  2. Step 2: Convert to fraction form
    18,426.70/27,640.05 = 7,332.67/x
  3. Step 3: Cross multiply
    18,426.70x = 27,640.05 × 7,332.67
  4. Step 4: Simplify right side
    18,426.70x = 202,675,365.43
  5. Step 5: Solve for x
    x = 202,675,365.43/18,426.70
  6. Step 6: Final answer
    x = 10,999.01

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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.