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Finding the Fourth Proportional to 74,745.45, 103,593.97 and 73,345.77

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Solution

The fourth proportional to 74,745.45, 103,593.97 and 73,345.77 is: 101,654.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,745.45 : 103,593.97 = 73,345.77 : x
  2. Step 2: Convert to fraction form
    74,745.45/103,593.97 = 73,345.77/x
  3. Step 3: Cross multiply
    74,745.45x = 103,593.97 × 73,345.77
  4. Step 4: Simplify right side
    74,745.45x = 7,598,178,979.04
  5. Step 5: Solve for x
    x = 7,598,178,979.04/74,745.45
  6. Step 6: Final answer
    x = 101,654.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.