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Finding the Fourth Proportional to 39,951.49, 59,939.16 and 11,872.48

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Solution

The fourth proportional to 39,951.49, 59,939.16 and 11,872.48 is: 17,812.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,951.49 : 59,939.16 = 11,872.48 : x
  2. Step 2: Convert to fraction form
    39,951.49/59,939.16 = 11,872.48/x
  3. Step 3: Cross multiply
    39,951.49x = 59,939.16 × 11,872.48
  4. Step 4: Simplify right side
    39,951.49x = 711,626,478.32
  5. Step 5: Solve for x
    x = 711,626,478.32/39,951.49
  6. Step 6: Final answer
    x = 17,812.26

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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.