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Finding the Fourth Proportional to 15,859.80, 23,787.80 and 4,173.94

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Solution

The fourth proportional to 15,859.80, 23,787.80 and 4,173.94 is: 6,260.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,859.80 : 23,787.80 = 4,173.94 : x
  2. Step 2: Convert to fraction form
    15,859.80/23,787.80 = 4,173.94/x
  3. Step 3: Cross multiply
    15,859.80x = 23,787.80 × 4,173.94
  4. Step 4: Simplify right side
    15,859.80x = 99,288,849.93
  5. Step 5: Solve for x
    x = 99,288,849.93/15,859.80
  6. Step 6: Final answer
    x = 6,260.41

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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.