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Finding the Fourth Proportional to 146,105.80, 218,996.70 and 57,329.80

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Solution

The fourth proportional to 146,105.80, 218,996.70 and 57,329.80 is: 85,931.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,105.80 : 218,996.70 = 57,329.80 : x
  2. Step 2: Convert to fraction form
    146,105.80/218,996.70 = 57,329.80/x
  3. Step 3: Cross multiply
    146,105.80x = 218,996.70 × 57,329.80
  4. Step 4: Simplify right side
    146,105.80x = 12,555,037,011.66
  5. Step 5: Solve for x
    x = 12,555,037,011.66/146,105.80
  6. Step 6: Final answer
    x = 85,931.13

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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.