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Finding the Fourth Proportional to 136,873.55, 205,674.82 and 73,742.15

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Solution

The fourth proportional to 136,873.55, 205,674.82 and 73,742.15 is: 110,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,873.55 : 205,674.82 = 73,742.15 : x
  2. Step 2: Convert to fraction form
    136,873.55/205,674.82 = 73,742.15/x
  3. Step 3: Cross multiply
    136,873.55x = 205,674.82 × 73,742.15
  4. Step 4: Simplify right side
    136,873.55x = 15,166,902,214.93
  5. Step 5: Solve for x
    x = 15,166,902,214.93/136,873.55
  6. Step 6: Final answer
    x = 110,809.60

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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.