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Finding the Fourth Proportional to 18,447.63, 27,661.59 and 7,348.56

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Solution

The fourth proportional to 18,447.63, 27,661.59 and 7,348.56 is: 11,018.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.63 : 27,661.59 = 7,348.56 : x
  2. Step 2: Convert to fraction form
    18,447.63/27,661.59 = 7,348.56/x
  3. Step 3: Cross multiply
    18,447.63x = 27,661.59 × 7,348.56
  4. Step 4: Simplify right side
    18,447.63x = 203,272,853.81
  5. Step 5: Solve for x
    x = 203,272,853.81/18,447.63
  6. Step 6: Final answer
    x = 11,018.91

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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.