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Finding the Fourth Proportional to 68,713.64, 95,015.70 and 54,541.88

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Solution

The fourth proportional to 68,713.64, 95,015.70 and 54,541.88 is: 75,419.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,713.64 : 95,015.70 = 54,541.88 : x
  2. Step 2: Convert to fraction form
    68,713.64/95,015.70 = 54,541.88/x
  3. Step 3: Cross multiply
    68,713.64x = 95,015.70 × 54,541.88
  4. Step 4: Simplify right side
    68,713.64x = 5,182,334,907.52
  5. Step 5: Solve for x
    x = 5,182,334,907.52/68,713.64
  6. Step 6: Final answer
    x = 75,419.30

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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.