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Finding the Fourth Proportional to 136,690.92, 204,966.15 and 61,770.48

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Solution

The fourth proportional to 136,690.92, 204,966.15 and 61,770.48 is: 92,623.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,690.92 : 204,966.15 = 61,770.48 : x
  2. Step 2: Convert to fraction form
    136,690.92/204,966.15 = 61,770.48/x
  3. Step 3: Cross multiply
    136,690.92x = 204,966.15 × 61,770.48
  4. Step 4: Simplify right side
    136,690.92x = 12,660,857,469.25
  5. Step 5: Solve for x
    x = 12,660,857,469.25/136,690.92
  6. Step 6: Final answer
    x = 92,623.98

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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.