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Finding the Fourth Proportional to 74,769.80, 103,179.47 and 41,235.80

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Solution

The fourth proportional to 74,769.80, 103,179.47 and 41,235.80 is: 56,903.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,769.80 : 103,179.47 = 41,235.80 : x
  2. Step 2: Convert to fraction form
    74,769.80/103,179.47 = 41,235.80/x
  3. Step 3: Cross multiply
    74,769.80x = 103,179.47 × 41,235.80
  4. Step 4: Simplify right side
    74,769.80x = 4,254,688,350.06
  5. Step 5: Solve for x
    x = 4,254,688,350.06/74,769.80
  6. Step 6: Final answer
    x = 56,903.83

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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.