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Finding the Fourth Proportional to 107,745.16, 161,537.12 and 74,369.92

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Solution

The fourth proportional to 107,745.16, 161,537.12 and 74,369.92 is: 111,499.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,745.16 : 161,537.12 = 74,369.92 : x
  2. Step 2: Convert to fraction form
    107,745.16/161,537.12 = 74,369.92/x
  3. Step 3: Cross multiply
    107,745.16x = 161,537.12 × 74,369.92
  4. Step 4: Simplify right side
    107,745.16x = 12,013,502,691.43
  5. Step 5: Solve for x
    x = 12,013,502,691.43/107,745.16
  6. Step 6: Final answer
    x = 111,499.23

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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.