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Finding the Fourth Proportional to 136,777.72, 205,527.40 and 73,644.52

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Solution

The fourth proportional to 136,777.72, 205,527.40 and 73,644.52 is: 110,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,777.72 : 205,527.40 = 73,644.52 : x
  2. Step 2: Convert to fraction form
    136,777.72/205,527.40 = 73,644.52/x
  3. Step 3: Cross multiply
    136,777.72x = 205,527.40 × 73,644.52
  4. Step 4: Simplify right side
    136,777.72x = 15,135,966,719.85
  5. Step 5: Solve for x
    x = 15,135,966,719.85/136,777.72
  6. Step 6: Final answer
    x = 110,661.05

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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.