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Finding the Fourth Proportional to 136,787.84, 205,542.60 and 73,654.64

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Solution

The fourth proportional to 136,787.84, 205,542.60 and 73,654.64 is: 110,676.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,787.84 : 205,542.60 = 73,654.64 : x
  2. Step 2: Convert to fraction form
    136,787.84/205,542.60 = 73,654.64/x
  3. Step 3: Cross multiply
    136,787.84x = 205,542.60 × 73,654.64
  4. Step 4: Simplify right side
    136,787.84x = 15,139,166,207.66
  5. Step 5: Solve for x
    x = 15,139,166,207.66/136,787.84
  6. Step 6: Final answer
    x = 110,676.26

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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.