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Finding the Fourth Proportional to 53,170.40, 79,755.72 and 49,922.72

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Solution

The fourth proportional to 53,170.40, 79,755.72 and 49,922.72 is: 74,884.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,170.40 : 79,755.72 = 49,922.72 : x
  2. Step 2: Convert to fraction form
    53,170.40/79,755.72 = 49,922.72/x
  3. Step 3: Cross multiply
    53,170.40x = 79,755.72 × 49,922.72
  4. Step 4: Simplify right side
    53,170.40x = 3,981,622,477.96
  5. Step 5: Solve for x
    x = 3,981,622,477.96/53,170.40
  6. Step 6: Final answer
    x = 74,884.19

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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.