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Finding the Fourth Proportional to 136,675.70, 204,940.65 and 57,700.70

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Solution

The fourth proportional to 136,675.70, 204,940.65 and 57,700.70 is: 86,520.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,675.70 : 204,940.65 = 57,700.70 : x
  2. Step 2: Convert to fraction form
    136,675.70/204,940.65 = 57,700.70/x
  3. Step 3: Cross multiply
    136,675.70x = 204,940.65 × 57,700.70
  4. Step 4: Simplify right side
    136,675.70x = 11,825,218,963.46
  5. Step 5: Solve for x
    x = 11,825,218,963.46/136,675.70
  6. Step 6: Final answer
    x = 86,520.27

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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.