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Finding the Fourth Proportional to 74,883.48, 103,356.57 and 49,394.40

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Solution

The fourth proportional to 74,883.48, 103,356.57 and 49,394.40 is: 68,175.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,883.48 : 103,356.57 = 49,394.40 : x
  2. Step 2: Convert to fraction form
    74,883.48/103,356.57 = 49,394.40/x
  3. Step 3: Cross multiply
    74,883.48x = 103,356.57 × 49,394.40
  4. Step 4: Simplify right side
    74,883.48x = 5,105,235,761.21
  5. Step 5: Solve for x
    x = 5,105,235,761.21/74,883.48
  6. Step 6: Final answer
    x = 68,175.73

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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.