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Finding the Fourth Proportional to 18,703.80, 25,812.09 and 10,748.52

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Solution

The fourth proportional to 18,703.80, 25,812.09 and 10,748.52 is: 14,833.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.80 : 25,812.09 = 10,748.52 : x
  2. Step 2: Convert to fraction form
    18,703.80/25,812.09 = 10,748.52/x
  3. Step 3: Cross multiply
    18,703.80x = 25,812.09 × 10,748.52
  4. Step 4: Simplify right side
    18,703.80x = 277,441,765.61
  5. Step 5: Solve for x
    x = 277,441,765.61/18,703.80
  6. Step 6: Final answer
    x = 14,833.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.