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Finding the Fourth Proportional to 136,874.55, 205,676.32 and 73,743.15

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Solution

The fourth proportional to 136,874.55, 205,676.32 and 73,743.15 is: 110,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,874.55 : 205,676.32 = 73,743.15 : x
  2. Step 2: Convert to fraction form
    136,874.55/205,676.32 = 73,743.15/x
  3. Step 3: Cross multiply
    136,874.55x = 205,676.32 × 73,743.15
  4. Step 4: Simplify right side
    136,874.55x = 15,167,218,688.83
  5. Step 5: Solve for x
    x = 15,167,218,688.83/136,874.55
  6. Step 6: Final answer
    x = 110,811.10

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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.