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Finding the Fourth Proportional to 18,937.32, 28,383.84 and 16,750.32

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Solution

The fourth proportional to 18,937.32, 28,383.84 and 16,750.32 is: 25,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.32 : 28,383.84 = 16,750.32 : x
  2. Step 2: Convert to fraction form
    18,937.32/28,383.84 = 16,750.32/x
  3. Step 3: Cross multiply
    18,937.32x = 28,383.84 × 16,750.32
  4. Step 4: Simplify right side
    18,937.32x = 475,438,402.83
  5. Step 5: Solve for x
    x = 475,438,402.83/18,937.32
  6. Step 6: Final answer
    x = 25,105.90

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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.