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Finding the Fourth Proportional to 91,205.80, 125,854.43 and 52,957.87

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Solution

The fourth proportional to 91,205.80, 125,854.43 and 52,957.87 is: 73,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,205.80 : 125,854.43 = 52,957.87 : x
  2. Step 2: Convert to fraction form
    91,205.80/125,854.43 = 52,957.87/x
  3. Step 3: Cross multiply
    91,205.80x = 125,854.43 × 52,957.87
  4. Step 4: Simplify right side
    91,205.80x = 6,664,981,963.44
  5. Step 5: Solve for x
    x = 6,664,981,963.44/91,205.80
  6. Step 6: Final answer
    x = 73,076.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.