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Finding the Fourth Proportional to 79,407.78, 109,584.66 and 43,598.43

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Solution

The fourth proportional to 79,407.78, 109,584.66 and 43,598.43 is: 60,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,407.78 : 109,584.66 = 43,598.43 : x
  2. Step 2: Convert to fraction form
    79,407.78/109,584.66 = 43,598.43/x
  3. Step 3: Cross multiply
    79,407.78x = 109,584.66 × 43,598.43
  4. Step 4: Simplify right side
    79,407.78x = 4,777,719,128.08
  5. Step 5: Solve for x
    x = 4,777,719,128.08/79,407.78
  6. Step 6: Final answer
    x = 60,166.89

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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.