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Finding the Fourth Proportional to 18,458.40, 27,674.19 and 7,361.76

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Solution

The fourth proportional to 18,458.40, 27,674.19 and 7,361.76 is: 11,037.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.40 : 27,674.19 = 7,361.76 : x
  2. Step 2: Convert to fraction form
    18,458.40/27,674.19 = 7,361.76/x
  3. Step 3: Cross multiply
    18,458.40x = 27,674.19 × 7,361.76
  4. Step 4: Simplify right side
    18,458.40x = 203,730,744.97
  5. Step 5: Solve for x
    x = 203,730,744.97/18,458.40
  6. Step 6: Final answer
    x = 11,037.29

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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.