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Finding the Fourth Proportional to 53,608.50, 73,979.79 and 31,256.82

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Solution

The fourth proportional to 53,608.50, 73,979.79 and 31,256.82 is: 43,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,608.50 : 73,979.79 = 31,256.82 : x
  2. Step 2: Convert to fraction form
    53,608.50/73,979.79 = 31,256.82/x
  3. Step 3: Cross multiply
    53,608.50x = 73,979.79 × 31,256.82
  4. Step 4: Simplify right side
    53,608.50x = 2,312,372,979.67
  5. Step 5: Solve for x
    x = 2,312,372,979.67/53,608.50
  6. Step 6: Final answer
    x = 43,134.45

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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.