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Finding the Fourth Proportional to 74,608.59, 102,997.89 and 57,574.56

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Solution

The fourth proportional to 74,608.59, 102,997.89 and 57,574.56 is: 79,482.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,608.59 : 102,997.89 = 57,574.56 : x
  2. Step 2: Convert to fraction form
    74,608.59/102,997.89 = 57,574.56/x
  3. Step 3: Cross multiply
    74,608.59x = 102,997.89 × 57,574.56
  4. Step 4: Simplify right side
    74,608.59x = 5,930,058,197.68
  5. Step 5: Solve for x
    x = 5,930,058,197.68/74,608.59
  6. Step 6: Final answer
    x = 79,482.24

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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.