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Finding the Fourth Proportional to 114,879.20, 172,318.80 and 62,391.20

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Solution

The fourth proportional to 114,879.20, 172,318.80 and 62,391.20 is: 93,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,879.20 : 172,318.80 = 62,391.20 : x
  2. Step 2: Convert to fraction form
    114,879.20/172,318.80 = 62,391.20/x
  3. Step 3: Cross multiply
    114,879.20x = 172,318.80 × 62,391.20
  4. Step 4: Simplify right side
    114,879.20x = 10,751,176,714.56
  5. Step 5: Solve for x
    x = 10,751,176,714.56/114,879.20
  6. Step 6: Final answer
    x = 93,586.80

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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.