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Finding the Fourth Proportional to 135,032.55, 202,676.01 and 68,520.42

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Solution

The fourth proportional to 135,032.55, 202,676.01 and 68,520.42 is: 102,845.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,032.55 : 202,676.01 = 68,520.42 : x
  2. Step 2: Convert to fraction form
    135,032.55/202,676.01 = 68,520.42/x
  3. Step 3: Cross multiply
    135,032.55x = 202,676.01 × 68,520.42
  4. Step 4: Simplify right side
    135,032.55x = 13,887,445,329.12
  5. Step 5: Solve for x
    x = 13,887,445,329.12/135,032.55
  6. Step 6: Final answer
    x = 102,845.17

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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.