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Finding the Fourth Proportional to 100,869.35, 151,239.23 and 41,728.55

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Solution

The fourth proportional to 100,869.35, 151,239.23 and 41,728.55 is: 62,566.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,869.35 : 151,239.23 = 41,728.55 : x
  2. Step 2: Convert to fraction form
    100,869.35/151,239.23 = 41,728.55/x
  3. Step 3: Cross multiply
    100,869.35x = 151,239.23 × 41,728.55
  4. Step 4: Simplify right side
    100,869.35x = 6,310,993,562.37
  5. Step 5: Solve for x
    x = 6,310,993,562.37/100,869.35
  6. Step 6: Final answer
    x = 62,566.02

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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.