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Finding the Fourth Proportional to 79,602.51, 109,849.86 and 43,791.60

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Solution

The fourth proportional to 79,602.51, 109,849.86 and 43,791.60 is: 60,431.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,602.51 : 109,849.86 = 43,791.60 : x
  2. Step 2: Convert to fraction form
    79,602.51/109,849.86 = 43,791.60/x
  3. Step 3: Cross multiply
    79,602.51x = 109,849.86 × 43,791.60
  4. Step 4: Simplify right side
    79,602.51x = 4,810,501,129.18
  5. Step 5: Solve for x
    x = 4,810,501,129.18/79,602.51
  6. Step 6: Final answer
    x = 60,431.53

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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.