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Finding the Fourth Proportional to 74,394.56, 102,664.72 and 43,759.92

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Solution

The fourth proportional to 74,394.56, 102,664.72 and 43,759.92 is: 60,388.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,394.56 : 102,664.72 = 43,759.92 : x
  2. Step 2: Convert to fraction form
    74,394.56/102,664.72 = 43,759.92/x
  3. Step 3: Cross multiply
    74,394.56x = 102,664.72 × 43,759.92
  4. Step 4: Simplify right side
    74,394.56x = 4,492,599,934.02
  5. Step 5: Solve for x
    x = 4,492,599,934.02/74,394.56
  6. Step 6: Final answer
    x = 60,388.82

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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.