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Finding the Fourth Proportional to 136,983.60, 205,375.92 and 92,500.08

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Solution

The fourth proportional to 136,983.60, 205,375.92 and 92,500.08 is: 138,682.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,983.60 : 205,375.92 = 92,500.08 : x
  2. Step 2: Convert to fraction form
    136,983.60/205,375.92 = 92,500.08/x
  3. Step 3: Cross multiply
    136,983.60x = 205,375.92 × 92,500.08
  4. Step 4: Simplify right side
    136,983.60x = 18,997,289,030.07
  5. Step 5: Solve for x
    x = 18,997,289,030.07/136,983.60
  6. Step 6: Final answer
    x = 138,682.94

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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.