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Finding the Fourth Proportional to 74,611.92, 102,969.79 and 41,908.98

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Solution

The fourth proportional to 74,611.92, 102,969.79 and 41,908.98 is: 57,837.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,611.92 : 102,969.79 = 41,908.98 : x
  2. Step 2: Convert to fraction form
    74,611.92/102,969.79 = 41,908.98/x
  3. Step 3: Cross multiply
    74,611.92x = 102,969.79 × 41,908.98
  4. Step 4: Simplify right side
    74,611.92x = 4,315,358,869.71
  5. Step 5: Solve for x
    x = 4,315,358,869.71/74,611.92
  6. Step 6: Final answer
    x = 57,837.39

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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.