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Finding the Fourth Proportional to 18,500.74, 27,755.16 and 5,353.63

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Solution

The fourth proportional to 18,500.74, 27,755.16 and 5,353.63 is: 8,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.74 : 27,755.16 = 5,353.63 : x
  2. Step 2: Convert to fraction form
    18,500.74/27,755.16 = 5,353.63/x
  3. Step 3: Cross multiply
    18,500.74x = 27,755.16 × 5,353.63
  4. Step 4: Simplify right side
    18,500.74x = 148,590,857.23
  5. Step 5: Solve for x
    x = 148,590,857.23/18,500.74
  6. Step 6: Final answer
    x = 8,031.62

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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.