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Finding the Fourth Proportional to 79,703.51, 109,991.57 and 43,893.66

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Solution

The fourth proportional to 79,703.51, 109,991.57 and 43,893.66 is: 60,573.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,703.51 : 109,991.57 = 43,893.66 : x
  2. Step 2: Convert to fraction form
    79,703.51/109,991.57 = 43,893.66/x
  3. Step 3: Cross multiply
    79,703.51x = 109,991.57 × 43,893.66
  4. Step 4: Simplify right side
    79,703.51x = 4,827,932,356.98
  5. Step 5: Solve for x
    x = 4,827,932,356.98/79,703.51
  6. Step 6: Final answer
    x = 60,573.65

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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.