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Finding the Fourth Proportional to 68,505.30, 94,540.90 and 41,643.40

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Solution

The fourth proportional to 68,505.30, 94,540.90 and 41,643.40 is: 57,470.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,505.30 : 94,540.90 = 41,643.40 : x
  2. Step 2: Convert to fraction form
    68,505.30/94,540.90 = 41,643.40/x
  3. Step 3: Cross multiply
    68,505.30x = 94,540.90 × 41,643.40
  4. Step 4: Simplify right side
    68,505.30x = 3,937,004,515.06
  5. Step 5: Solve for x
    x = 3,937,004,515.06/68,505.30
  6. Step 6: Final answer
    x = 57,470.07

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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.