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Finding the Fourth Proportional to 74,601.70, 102,951.66 and 40,611.16

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Solution

The fourth proportional to 74,601.70, 102,951.66 and 40,611.16 is: 56,044.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,601.70 : 102,951.66 = 40,611.16 : x
  2. Step 2: Convert to fraction form
    74,601.70/102,951.66 = 40,611.16/x
  3. Step 3: Cross multiply
    74,601.70x = 102,951.66 × 40,611.16
  4. Step 4: Simplify right side
    74,601.70x = 4,180,986,336.53
  5. Step 5: Solve for x
    x = 4,180,986,336.53/74,601.70
  6. Step 6: Final answer
    x = 56,044.12

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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.