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Finding the Fourth Proportional to 140,524.83, 210,787.61 and 57,418.83

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Solution

The fourth proportional to 140,524.83, 210,787.61 and 57,418.83 is: 86,128.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,524.83 : 210,787.61 = 57,418.83 : x
  2. Step 2: Convert to fraction form
    140,524.83/210,787.61 = 57,418.83/x
  3. Step 3: Cross multiply
    140,524.83x = 210,787.61 × 57,418.83
  4. Step 4: Simplify right side
    140,524.83x = 12,103,177,657.60
  5. Step 5: Solve for x
    x = 12,103,177,657.60/140,524.83
  6. Step 6: Final answer
    x = 86,128.39

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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.