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Finding the Fourth Proportional to 15,857.94, 23,787.30 and 5,328.33

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Solution

The fourth proportional to 15,857.94, 23,787.30 and 5,328.33 is: 7,992.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,857.94 : 23,787.30 = 5,328.33 : x
  2. Step 2: Convert to fraction form
    15,857.94/23,787.30 = 5,328.33/x
  3. Step 3: Cross multiply
    15,857.94x = 23,787.30 × 5,328.33
  4. Step 4: Simplify right side
    15,857.94x = 126,746,648.79
  5. Step 5: Solve for x
    x = 126,746,648.79/15,857.94
  6. Step 6: Final answer
    x = 7,992.63

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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.