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Finding the Fourth Proportional to 141,745.16, 212,748.96 and 71,673.68

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Solution

The fourth proportional to 141,745.16, 212,748.96 and 71,673.68 is: 107,576.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,745.16 : 212,748.96 = 71,673.68 : x
  2. Step 2: Convert to fraction form
    141,745.16/212,748.96 = 71,673.68/x
  3. Step 3: Cross multiply
    141,745.16x = 212,748.96 × 71,673.68
  4. Step 4: Simplify right side
    141,745.16x = 15,248,500,879.37
  5. Step 5: Solve for x
    x = 15,248,500,879.37/141,745.16
  6. Step 6: Final answer
    x = 107,576.87

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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.