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Finding the Fourth Proportional to 112,652.10, 168,820.56 and 74,745.90

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Solution

The fourth proportional to 112,652.10, 168,820.56 and 74,745.90 is: 112,014.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,652.10 : 168,820.56 = 74,745.90 : x
  2. Step 2: Convert to fraction form
    112,652.10/168,820.56 = 74,745.90/x
  3. Step 3: Cross multiply
    112,652.10x = 168,820.56 × 74,745.90
  4. Step 4: Simplify right side
    112,652.10x = 12,618,644,695.70
  5. Step 5: Solve for x
    x = 12,618,644,695.70/112,652.10
  6. Step 6: Final answer
    x = 112,014.29

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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.