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Finding the Fourth Proportional to 79,169.49, 109,248.21 and 43,353.72

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Solution

The fourth proportional to 79,169.49, 109,248.21 and 43,353.72 is: 59,825.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,169.49 : 109,248.21 = 43,353.72 : x
  2. Step 2: Convert to fraction form
    79,169.49/109,248.21 = 43,353.72/x
  3. Step 3: Cross multiply
    79,169.49x = 109,248.21 × 43,353.72
  4. Step 4: Simplify right side
    79,169.49x = 4,736,316,306.84
  5. Step 5: Solve for x
    x = 4,736,316,306.84/79,169.49
  6. Step 6: Final answer
    x = 59,825.02

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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.