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Finding the Fourth Proportional to 79,502.81, 109,712.61 and 43,692.05

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Solution

The fourth proportional to 79,502.81, 109,712.61 and 43,692.05 is: 60,294.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,502.81 : 109,712.61 = 43,692.05 : x
  2. Step 2: Convert to fraction form
    79,502.81/109,712.61 = 43,692.05/x
  3. Step 3: Cross multiply
    79,502.81x = 109,712.61 × 43,692.05
  4. Step 4: Simplify right side
    79,502.81x = 4,793,569,116.03
  5. Step 5: Solve for x
    x = 4,793,569,116.03/79,502.81
  6. Step 6: Final answer
    x = 60,294.34

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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.