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Finding the Fourth Proportional to 69,371.76, 95,722.76 and 40,680.59

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Solution

The fourth proportional to 69,371.76, 95,722.76 and 40,680.59 is: 56,133.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,371.76 : 95,722.76 = 40,680.59 : x
  2. Step 2: Convert to fraction form
    69,371.76/95,722.76 = 40,680.59/x
  3. Step 3: Cross multiply
    69,371.76x = 95,722.76 × 40,680.59
  4. Step 4: Simplify right side
    69,371.76x = 3,894,058,353.23
  5. Step 5: Solve for x
    x = 3,894,058,353.23/69,371.76
  6. Step 6: Final answer
    x = 56,133.19

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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.