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Finding the Fourth Proportional to 74,814.94, 112,200.49 and 61,634.62

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Solution

The fourth proportional to 74,814.94, 112,200.49 and 61,634.62 is: 92,433.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,814.94 : 112,200.49 = 61,634.62 : x
  2. Step 2: Convert to fraction form
    74,814.94/112,200.49 = 61,634.62/x
  3. Step 3: Cross multiply
    74,814.94x = 112,200.49 × 61,634.62
  4. Step 4: Simplify right side
    74,814.94x = 6,915,434,564.96
  5. Step 5: Solve for x
    x = 6,915,434,564.96/74,814.94
  6. Step 6: Final answer
    x = 92,433.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.