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Finding the Fourth Proportional to 69,546.02, 95,978.27 and 39,331.35

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Solution

The fourth proportional to 69,546.02, 95,978.27 and 39,331.35 is: 54,279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,546.02 : 95,978.27 = 39,331.35 : x
  2. Step 2: Convert to fraction form
    69,546.02/95,978.27 = 39,331.35/x
  3. Step 3: Cross multiply
    69,546.02x = 95,978.27 × 39,331.35
  4. Step 4: Simplify right side
    69,546.02x = 3,774,954,536.92
  5. Step 5: Solve for x
    x = 3,774,954,536.92/69,546.02
  6. Step 6: Final answer
    x = 54,279.95

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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.