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Finding the Fourth Proportional to 74,885.50, 103,342.08 and 41,351.50

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Solution

The fourth proportional to 74,885.50, 103,342.08 and 41,351.50 is: 57,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,885.50 : 103,342.08 = 41,351.50 : x
  2. Step 2: Convert to fraction form
    74,885.50/103,342.08 = 41,351.50/x
  3. Step 3: Cross multiply
    74,885.50x = 103,342.08 × 41,351.50
  4. Step 4: Simplify right side
    74,885.50x = 4,273,350,021.12
  5. Step 5: Solve for x
    x = 4,273,350,021.12/74,885.50
  6. Step 6: Final answer
    x = 57,065.12

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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.