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Finding the Fourth Proportional to 33,288.84, 49,929.99 and 9,915.48

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Solution

The fourth proportional to 33,288.84, 49,929.99 and 9,915.48 is: 14,872.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,288.84 : 49,929.99 = 9,915.48 : x
  2. Step 2: Convert to fraction form
    33,288.84/49,929.99 = 9,915.48/x
  3. Step 3: Cross multiply
    33,288.84x = 49,929.99 × 9,915.48
  4. Step 4: Simplify right side
    33,288.84x = 495,079,817.25
  5. Step 5: Solve for x
    x = 495,079,817.25/33,288.84
  6. Step 6: Final answer
    x = 14,872.25

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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.