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Finding the Fourth Proportional to 47,480.49, 65,479.73 and 40,763.97

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Solution

The fourth proportional to 47,480.49, 65,479.73 and 40,763.97 is: 56,217.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,480.49 : 65,479.73 = 40,763.97 : x
  2. Step 2: Convert to fraction form
    47,480.49/65,479.73 = 40,763.97/x
  3. Step 3: Cross multiply
    47,480.49x = 65,479.73 × 40,763.97
  4. Step 4: Simplify right side
    47,480.49x = 2,669,213,545.51
  5. Step 5: Solve for x
    x = 2,669,213,545.51/47,480.49
  6. Step 6: Final answer
    x = 56,217.06

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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.