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Finding the Fourth Proportional to 79,528.69, 109,747.41 and 43,718.73

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Solution

The fourth proportional to 79,528.69, 109,747.41 and 43,718.73 is: 60,330.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,528.69 : 109,747.41 = 43,718.73 : x
  2. Step 2: Convert to fraction form
    79,528.69/109,747.41 = 43,718.73/x
  3. Step 3: Cross multiply
    79,528.69x = 109,747.41 × 43,718.73
  4. Step 4: Simplify right side
    79,528.69x = 4,798,017,167.40
  5. Step 5: Solve for x
    x = 4,798,017,167.40/79,528.69
  6. Step 6: Final answer
    x = 60,330.65

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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.