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Finding the Fourth Proportional to 48,490.89, 66,879.48 and 33,186.51

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Solution

The fourth proportional to 48,490.89, 66,879.48 and 33,186.51 is: 45,771.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,490.89 : 66,879.48 = 33,186.51 : x
  2. Step 2: Convert to fraction form
    48,490.89/66,879.48 = 33,186.51/x
  3. Step 3: Cross multiply
    48,490.89x = 66,879.48 × 33,186.51
  4. Step 4: Simplify right side
    48,490.89x = 2,219,496,531.81
  5. Step 5: Solve for x
    x = 2,219,496,531.81/48,490.89
  6. Step 6: Final answer
    x = 45,771.41

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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.