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Finding the Fourth Proportional to 74,571.69, 102,910.83 and 40,582.02

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Solution

The fourth proportional to 74,571.69, 102,910.83 and 40,582.02 is: 56,004.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,571.69 : 102,910.83 = 40,582.02 : x
  2. Step 2: Convert to fraction form
    74,571.69/102,910.83 = 40,582.02/x
  3. Step 3: Cross multiply
    74,571.69x = 102,910.83 × 40,582.02
  4. Step 4: Simplify right side
    74,571.69x = 4,176,329,361.28
  5. Step 5: Solve for x
    x = 4,176,329,361.28/74,571.69
  6. Step 6: Final answer
    x = 56,004.22

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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.