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Finding the Fourth Proportional to 135,032.86, 202,676.42 and 68,520.72

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Solution

The fourth proportional to 135,032.86, 202,676.42 and 68,520.72 is: 102,845.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,032.86 : 202,676.42 = 68,520.72 : x
  2. Step 2: Convert to fraction form
    135,032.86/202,676.42 = 68,520.72/x
  3. Step 3: Cross multiply
    135,032.86x = 202,676.42 × 68,520.72
  4. Step 4: Simplify right side
    135,032.86x = 13,887,534,225.42
  5. Step 5: Solve for x
    x = 13,887,534,225.42/135,032.86
  6. Step 6: Final answer
    x = 102,845.59

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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.